diff --git a/api_names_out.yaml b/api_names_out.yaml
index d23048214..3e2d94be2 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -4392,6 +4392,9 @@
 "/alertcenter:v1beta1/BadWhitelist/messages": messages
 "/alertcenter:v1beta1/BadWhitelist/messages/message": message
 "/alertcenter:v1beta1/BadWhitelist/sourceIp": source_ip
+"/alertcenter:v1beta1/CloudPubsubTopic": cloud_pubsub_topic
+"/alertcenter:v1beta1/CloudPubsubTopic/payloadFormat": payload_format
+"/alertcenter:v1beta1/CloudPubsubTopic/topicName": topic_name
 "/alertcenter:v1beta1/Csv": csv
 "/alertcenter:v1beta1/Csv/dataRows": data_rows
 "/alertcenter:v1beta1/Csv/dataRows/data_row": data_row
@@ -4452,12 +4455,17 @@
 "/alertcenter:v1beta1/MailPhishing/messages/message": message
 "/alertcenter:v1beta1/MaliciousEntity": malicious_entity
 "/alertcenter:v1beta1/MaliciousEntity/fromHeader": from_header
+"/alertcenter:v1beta1/Notification": notification
+"/alertcenter:v1beta1/Notification/cloudPubsubTopic": cloud_pubsub_topic
 "/alertcenter:v1beta1/PhishingSpike": phishing_spike
 "/alertcenter:v1beta1/PhishingSpike/domainId": domain_id
 "/alertcenter:v1beta1/PhishingSpike/isInternal": is_internal
 "/alertcenter:v1beta1/PhishingSpike/maliciousEntity": malicious_entity
 "/alertcenter:v1beta1/PhishingSpike/messages": messages
 "/alertcenter:v1beta1/PhishingSpike/messages/message": message
+"/alertcenter:v1beta1/Settings": settings
+"/alertcenter:v1beta1/Settings/notifications": notifications
+"/alertcenter:v1beta1/Settings/notifications/notification": notification
 "/alertcenter:v1beta1/StateSponsoredAttack": state_sponsored_attack
 "/alertcenter:v1beta1/StateSponsoredAttack/email": email
 "/alertcenter:v1beta1/SuspiciousActivity": suspicious_activity
@@ -4497,6 +4505,8 @@
 "/alertcenter:v1beta1/alertcenter.alerts.list/pageToken": page_token
 "/alertcenter:v1beta1/alertcenter.alerts.undelete": undelete_alert
 "/alertcenter:v1beta1/alertcenter.alerts.undelete/alertId": alert_id
+"/alertcenter:v1beta1/alertcenter.getSettings/customerId": customer_id
+"/alertcenter:v1beta1/alertcenter.updateSettings/customerId": customer_id
 "/alertcenter:v1beta1/fields": fields
 "/alertcenter:v1beta1/key": key
 "/alertcenter:v1beta1/quotaUser": quota_user
@@ -15812,6 +15822,90 @@
 "/cloudfunctions:v1beta2/fields": fields
 "/cloudfunctions:v1beta2/key": key
 "/cloudfunctions:v1beta2/quotaUser": quota_user
+"/cloudidentity:v1beta1/EntityKey": entity_key
+"/cloudidentity:v1beta1/EntityKey/id": id
+"/cloudidentity:v1beta1/EntityKey/namespace": namespace
+"/cloudidentity:v1beta1/Group": group
+"/cloudidentity:v1beta1/Group/additionalGroupKeys": additional_group_keys
+"/cloudidentity:v1beta1/Group/additionalGroupKeys/additional_group_key": additional_group_key
+"/cloudidentity:v1beta1/Group/createTime": create_time
+"/cloudidentity:v1beta1/Group/description": description
+"/cloudidentity:v1beta1/Group/displayName": display_name
+"/cloudidentity:v1beta1/Group/groupKey": group_key
+"/cloudidentity:v1beta1/Group/labels": labels
+"/cloudidentity:v1beta1/Group/labels/label": label
+"/cloudidentity:v1beta1/Group/name": name
+"/cloudidentity:v1beta1/Group/parent": parent
+"/cloudidentity:v1beta1/Group/updateTime": update_time
+"/cloudidentity:v1beta1/ListMembershipsResponse": list_memberships_response
+"/cloudidentity:v1beta1/ListMembershipsResponse/memberships": memberships
+"/cloudidentity:v1beta1/ListMembershipsResponse/memberships/membership": membership
+"/cloudidentity:v1beta1/ListMembershipsResponse/nextPageToken": next_page_token
+"/cloudidentity:v1beta1/LookupGroupNameResponse": lookup_group_name_response
+"/cloudidentity:v1beta1/LookupGroupNameResponse/name": name
+"/cloudidentity:v1beta1/LookupMembershipNameResponse": lookup_membership_name_response
+"/cloudidentity:v1beta1/LookupMembershipNameResponse/name": name
+"/cloudidentity:v1beta1/Membership": membership
+"/cloudidentity:v1beta1/Membership/createTime": create_time
+"/cloudidentity:v1beta1/Membership/memberKey": member_key
+"/cloudidentity:v1beta1/Membership/name": name
+"/cloudidentity:v1beta1/Membership/roles": roles
+"/cloudidentity:v1beta1/Membership/roles/role": role
+"/cloudidentity:v1beta1/Membership/updateTime": update_time
+"/cloudidentity:v1beta1/MembershipRole": membership_role
+"/cloudidentity:v1beta1/MembershipRole/name": name
+"/cloudidentity:v1beta1/Operation": operation
+"/cloudidentity:v1beta1/Operation/done": done
+"/cloudidentity:v1beta1/Operation/error": error
+"/cloudidentity:v1beta1/Operation/metadata": metadata
+"/cloudidentity:v1beta1/Operation/metadata/metadatum": metadatum
+"/cloudidentity:v1beta1/Operation/name": name
+"/cloudidentity:v1beta1/Operation/response": response
+"/cloudidentity:v1beta1/Operation/response/response": response
+"/cloudidentity:v1beta1/SearchGroupsResponse": search_groups_response
+"/cloudidentity:v1beta1/SearchGroupsResponse/groups": groups
+"/cloudidentity:v1beta1/SearchGroupsResponse/groups/group": group
+"/cloudidentity:v1beta1/SearchGroupsResponse/nextPageToken": next_page_token
+"/cloudidentity:v1beta1/Status": status
+"/cloudidentity:v1beta1/Status/code": code
+"/cloudidentity:v1beta1/Status/details": details
+"/cloudidentity:v1beta1/Status/details/detail": detail
+"/cloudidentity:v1beta1/Status/details/detail/detail": detail
+"/cloudidentity:v1beta1/Status/message": message
+"/cloudidentity:v1beta1/cloudidentity.groups.create": create_group
+"/cloudidentity:v1beta1/cloudidentity.groups.delete": delete_group
+"/cloudidentity:v1beta1/cloudidentity.groups.delete/name": name
+"/cloudidentity:v1beta1/cloudidentity.groups.get": get_group
+"/cloudidentity:v1beta1/cloudidentity.groups.get/name": name
+"/cloudidentity:v1beta1/cloudidentity.groups.lookup": lookup_group
+"/cloudidentity:v1beta1/cloudidentity.groups.lookup/groupKey.id": group_key_id
+"/cloudidentity:v1beta1/cloudidentity.groups.lookup/groupKey.namespace": group_key_namespace
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.create": create_group_membership
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.create/parent": parent
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.delete": delete_group_membership
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.delete/name": name
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.get": get_group_membership
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.get/name": name
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.list": list_group_memberships
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.list/pageSize": page_size
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.list/pageToken": page_token
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.list/parent": parent
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.list/view": view
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.lookup": lookup_group_membership
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.lookup/memberKey.id": member_key_id
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.lookup/memberKey.namespace": member_key_namespace
+"/cloudidentity:v1beta1/cloudidentity.groups.memberships.lookup/parent": parent
+"/cloudidentity:v1beta1/cloudidentity.groups.patch": patch_group
+"/cloudidentity:v1beta1/cloudidentity.groups.patch/name": name
+"/cloudidentity:v1beta1/cloudidentity.groups.patch/updateMask": update_mask
+"/cloudidentity:v1beta1/cloudidentity.groups.search": search_groups
+"/cloudidentity:v1beta1/cloudidentity.groups.search/pageSize": page_size
+"/cloudidentity:v1beta1/cloudidentity.groups.search/pageToken": page_token
+"/cloudidentity:v1beta1/cloudidentity.groups.search/query": query
+"/cloudidentity:v1beta1/cloudidentity.groups.search/view": view
+"/cloudidentity:v1beta1/fields": fields
+"/cloudidentity:v1beta1/key": key
+"/cloudidentity:v1beta1/quotaUser": quota_user
 "/cloudiot:v1/AuditConfig": audit_config
 "/cloudiot:v1/AuditConfig/auditLogConfigs": audit_log_configs
 "/cloudiot:v1/AuditConfig/auditLogConfigs/audit_log_config": audit_log_config
diff --git a/generated/google/apis/alertcenter_v1beta1.rb b/generated/google/apis/alertcenter_v1beta1.rb
index 5344f4c5d..c96aae2c6 100644
--- a/generated/google/apis/alertcenter_v1beta1.rb
+++ b/generated/google/apis/alertcenter_v1beta1.rb
@@ -25,7 +25,7 @@ module Google
     # @see https://developers.google.com/admin-sdk/alertcenter/
     module AlertcenterV1beta1
       VERSION = 'V1beta1'
-      REVISION = '20181208'
+      REVISION = '20181215'
 
       # See and delete your domain's G Suite alerts, and send alert feedback
       AUTH_APPS_ALERTS = 'https://www.googleapis.com/auth/apps.alerts'
diff --git a/generated/google/apis/alertcenter_v1beta1/classes.rb b/generated/google/apis/alertcenter_v1beta1/classes.rb
index baf9c5c1f..e12dad328 100644
--- a/generated/google/apis/alertcenter_v1beta1/classes.rb
+++ b/generated/google/apis/alertcenter_v1beta1/classes.rb
@@ -93,7 +93,7 @@ module Google
         # @return [String]
         attr_accessor :security_investigation_tool_link
       
-        # Required. A unique identifier for the system that is reported the alert.
+        # Required. A unique identifier for the system that reported the alert.
         # Supported sources are any of the following:
         # * Google Operations
         # * Mobile device management
@@ -245,6 +245,36 @@ module Google
         end
       end
       
+      # A reference to a Cloud Pubsub topic.
+      # To register for notifications, the owner of the topic must grant
+      # `alerts-api-push-notifications@system.gserviceaccount.com` the
+      # `projects.topics.publish` permission.
+      class CloudPubsubTopic
+        include Google::Apis::Core::Hashable
+      
+        # Optional. The format of the payload that would be sent.
+        # If not specified the format will be JSON.
+        # Corresponds to the JSON property `payloadFormat`
+        # @return [String]
+        attr_accessor :payload_format
+      
+        # The `name` field of a Cloud Pubsub [Topic]
+        # (https://cloud.google.com/pubsub/docs/reference/rest/v1/projects.topics#Topic).
+        # Corresponds to the JSON property `topicName`
+        # @return [String]
+        attr_accessor :topic_name
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @payload_format = args[:payload_format] if args.key?(:payload_format)
+          @topic_name = args[:topic_name] if args.key?(:topic_name)
+        end
+      end
+      
       # A representation of a CSV file attachment, as a list of column headers and
       # a list of data rows.
       class Csv
@@ -674,6 +704,30 @@ module Google
         end
       end
       
+      # Settings for callback notifications.
+      # For more details see [G Suite Alert
+      # Notification](/admin-sdk/alertcenter/guides/notifications).
+      class Notification
+        include Google::Apis::Core::Hashable
+      
+        # A reference to a Cloud Pubsub topic.
+        # To register for notifications, the owner of the topic must grant
+        # `alerts-api-push-notifications@system.gserviceaccount.com` the
+        # `projects.topics.publish` permission.
+        # Corresponds to the JSON property `cloudPubsubTopic`
+        # @return [Google::Apis::AlertcenterV1beta1::CloudPubsubTopic]
+        attr_accessor :cloud_pubsub_topic
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @cloud_pubsub_topic = args[:cloud_pubsub_topic] if args.key?(:cloud_pubsub_topic)
+        end
+      end
+      
       # Alert for a spike in user reported phishing.
       # <aside class="warning"><b>Warning</b>: This type has been deprecated. Use
       # [MailPhishing](/admin-sdk/alertcenter/reference/rest/v1beta1/MailPhishing)
@@ -715,6 +769,25 @@ module Google
         end
       end
       
+      # Customer-level settings.
+      class Settings
+        include Google::Apis::Core::Hashable
+      
+        # The list of notifications.
+        # Corresponds to the JSON property `notifications`
+        # @return [Array<Google::Apis::AlertcenterV1beta1::Notification>]
+        attr_accessor :notifications
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @notifications = args[:notifications] if args.key?(:notifications)
+        end
+      end
+      
       # A state-sponsored attack alert. Derived from audit logs.
       class StateSponsoredAttack
         include Google::Apis::Core::Hashable
diff --git a/generated/google/apis/alertcenter_v1beta1/representations.rb b/generated/google/apis/alertcenter_v1beta1/representations.rb
index c835d6a01..3e7ad5fda 100644
--- a/generated/google/apis/alertcenter_v1beta1/representations.rb
+++ b/generated/google/apis/alertcenter_v1beta1/representations.rb
@@ -52,6 +52,12 @@ module Google
         include Google::Apis::Core::JsonObjectSupport
       end
       
+      class CloudPubsubTopic
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
       class Csv
         class Representation < Google::Apis::Core::JsonRepresentation; end
       
@@ -136,12 +142,24 @@ module Google
         include Google::Apis::Core::JsonObjectSupport
       end
       
+      class Notification
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
       class PhishingSpike
         class Representation < Google::Apis::Core::JsonRepresentation; end
       
         include Google::Apis::Core::JsonObjectSupport
       end
       
+      class Settings
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
       class StateSponsoredAttack
         class Representation < Google::Apis::Core::JsonRepresentation; end
       
@@ -224,6 +242,14 @@ module Google
         end
       end
       
+      class CloudPubsubTopic
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :payload_format, as: 'payloadFormat'
+          property :topic_name, as: 'topicName'
+        end
+      end
+      
       class Csv
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
@@ -353,6 +379,14 @@ module Google
         end
       end
       
+      class Notification
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :cloud_pubsub_topic, as: 'cloudPubsubTopic', class: Google::Apis::AlertcenterV1beta1::CloudPubsubTopic, decorator: Google::Apis::AlertcenterV1beta1::CloudPubsubTopic::Representation
+      
+        end
+      end
+      
       class PhishingSpike
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
@@ -366,6 +400,14 @@ module Google
         end
       end
       
+      class Settings
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          collection :notifications, as: 'notifications', class: Google::Apis::AlertcenterV1beta1::Notification, decorator: Google::Apis::AlertcenterV1beta1::Notification::Representation
+      
+        end
+      end
+      
       class StateSponsoredAttack
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
diff --git a/generated/google/apis/alertcenter_v1beta1/service.rb b/generated/google/apis/alertcenter_v1beta1/service.rb
index 70d6cba6c..41ff4bf1d 100644
--- a/generated/google/apis/alertcenter_v1beta1/service.rb
+++ b/generated/google/apis/alertcenter_v1beta1/service.rb
@@ -297,6 +297,73 @@ module Google
           command.query['quotaUser'] = quota_user unless quota_user.nil?
           execute_or_queue_command(command, &block)
         end
+        
+        # Returns customer-level settings.
+        # @param [String] customer_id
+        #   Optional. The unique identifier of the G Suite organization account of the
+        #   customer the alert settings are associated with.
+        #   Inferred from the caller identity if not provided.
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::AlertcenterV1beta1::Settings] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::AlertcenterV1beta1::Settings]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def get_settings(customer_id: nil, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:get, 'v1beta1/settings', options)
+          command.response_representation = Google::Apis::AlertcenterV1beta1::Settings::Representation
+          command.response_class = Google::Apis::AlertcenterV1beta1::Settings
+          command.query['customerId'] = customer_id unless customer_id.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Update the customer-level settings.
+        # @param [Google::Apis::AlertcenterV1beta1::Settings] settings_object
+        # @param [String] customer_id
+        #   Optional. The unique identifier of the G Suite organization account of the
+        #   customer the alert settings are associated with.
+        #   Inferred from the caller identity if not provided.
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::AlertcenterV1beta1::Settings] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::AlertcenterV1beta1::Settings]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def update_settings(settings_object = nil, customer_id: nil, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:patch, 'v1beta1/settings', options)
+          command.request_representation = Google::Apis::AlertcenterV1beta1::Settings::Representation
+          command.request_object = settings_object
+          command.response_representation = Google::Apis::AlertcenterV1beta1::Settings::Representation
+          command.response_class = Google::Apis::AlertcenterV1beta1::Settings
+          command.query['customerId'] = customer_id unless customer_id.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
 
         protected
 
diff --git a/generated/google/apis/cloudidentity_v1beta1.rb b/generated/google/apis/cloudidentity_v1beta1.rb
new file mode 100644
index 000000000..3589b09f8
--- /dev/null
+++ b/generated/google/apis/cloudidentity_v1beta1.rb
@@ -0,0 +1,31 @@
+# Copyright 2015 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'google/apis/cloudidentity_v1beta1/service.rb'
+require 'google/apis/cloudidentity_v1beta1/classes.rb'
+require 'google/apis/cloudidentity_v1beta1/representations.rb'
+
+module Google
+  module Apis
+    # Cloud Identity API
+    #
+    # API for provisioning and managing identity resources.
+    #
+    # @see https://cloud.google.com/identity/
+    module CloudidentityV1beta1
+      VERSION = 'V1beta1'
+      REVISION = '20181215'
+    end
+  end
+end
diff --git a/generated/google/apis/cloudidentity_v1beta1/classes.rb b/generated/google/apis/cloudidentity_v1beta1/classes.rb
new file mode 100644
index 000000000..c29b050a4
--- /dev/null
+++ b/generated/google/apis/cloudidentity_v1beta1/classes.rb
@@ -0,0 +1,475 @@
+# Copyright 2015 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'date'
+require 'google/apis/core/base_service'
+require 'google/apis/core/json_representation'
+require 'google/apis/core/hashable'
+require 'google/apis/errors'
+
+module Google
+  module Apis
+    module CloudidentityV1beta1
+      
+      # An EntityKey uniquely identifies an Entity. Namespaces are used to provide
+      # isolation for ids.  A single Id can be reused across namespaces but the
+      # combination of a namespace and an id must be unique.
+      class EntityKey
+        include Google::Apis::Core::Hashable
+      
+        # The id of the entity within the given namespace. The id must be unique
+        # within its namespace.
+        # Corresponds to the JSON property `id`
+        # @return [String]
+        attr_accessor :id
+      
+        # Namespaces provide isolation for ids, i.e an id only needs to be unique
+        # within its namespace.
+        # Namespaces are currently only created as part of IdentitySource creation
+        # from Admin Console. A namespace `"identitysources/`identity_source_id`"` is
+        # created corresponding to every Identity Source `identity_source_id`.
+        # Corresponds to the JSON property `namespace`
+        # @return [String]
+        attr_accessor :namespace
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @id = args[:id] if args.key?(:id)
+          @namespace = args[:namespace] if args.key?(:namespace)
+        end
+      end
+      
+      # Resource representing a Group
+      class Group
+        include Google::Apis::Core::Hashable
+      
+        # Optional. Additional entity key aliases for a Group
+        # Corresponds to the JSON property `additionalGroupKeys`
+        # @return [Array<Google::Apis::CloudidentityV1beta1::EntityKey>]
+        attr_accessor :additional_group_keys
+      
+        # The time when the Group was created.
+        # Output only
+        # Corresponds to the JSON property `createTime`
+        # @return [String]
+        attr_accessor :create_time
+      
+        # An extended description to help users determine the purpose of a Group. For
+        # example, you can include information about who should join the Group, the
+        # types of messages to send to the Group, links to FAQs about the Group, or
+        # related Groups. Maximum length is 4,096 characters.
+        # Corresponds to the JSON property `description`
+        # @return [String]
+        attr_accessor :description
+      
+        # The Group's display name.
+        # Corresponds to the JSON property `displayName`
+        # @return [String]
+        attr_accessor :display_name
+      
+        # An EntityKey uniquely identifies an Entity. Namespaces are used to provide
+        # isolation for ids.  A single Id can be reused across namespaces but the
+        # combination of a namespace and an id must be unique.
+        # Corresponds to the JSON property `groupKey`
+        # @return [Google::Apis::CloudidentityV1beta1::EntityKey]
+        attr_accessor :group_key
+      
+        # Labels for Group resource.
+        # Required.
+        # For creating Groups under a namespace, set label key to
+        # 'labels/system/groups/external' and label value as empty.
+        # Corresponds to the JSON property `labels`
+        # @return [Hash<String,String>]
+        attr_accessor :labels
+      
+        # [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        # Group in the format: `groups/`group_id``, where group_id is the unique id
+        # assigned to the Group.
+        # Must be left blank while creating a Group
+        # Corresponds to the JSON property `name`
+        # @return [String]
+        attr_accessor :name
+      
+        # The entity under which this Group resides in Cloud Identity resource
+        # hierarchy. Must be set when creating a Group, read-only afterwards.
+        # Currently allowed types: 'identitysources'.
+        # Corresponds to the JSON property `parent`
+        # @return [String]
+        attr_accessor :parent
+      
+        # The time when the Group was last updated.
+        # Output only
+        # Corresponds to the JSON property `updateTime`
+        # @return [String]
+        attr_accessor :update_time
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @additional_group_keys = args[:additional_group_keys] if args.key?(:additional_group_keys)
+          @create_time = args[:create_time] if args.key?(:create_time)
+          @description = args[:description] if args.key?(:description)
+          @display_name = args[:display_name] if args.key?(:display_name)
+          @group_key = args[:group_key] if args.key?(:group_key)
+          @labels = args[:labels] if args.key?(:labels)
+          @name = args[:name] if args.key?(:name)
+          @parent = args[:parent] if args.key?(:parent)
+          @update_time = args[:update_time] if args.key?(:update_time)
+        end
+      end
+      
+      # 
+      class ListMembershipsResponse
+        include Google::Apis::Core::Hashable
+      
+        # List of Memberships
+        # Corresponds to the JSON property `memberships`
+        # @return [Array<Google::Apis::CloudidentityV1beta1::Membership>]
+        attr_accessor :memberships
+      
+        # Token to retrieve the next page of results, or empty if there are no
+        # more results available for listing.
+        # Corresponds to the JSON property `nextPageToken`
+        # @return [String]
+        attr_accessor :next_page_token
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @memberships = args[:memberships] if args.key?(:memberships)
+          @next_page_token = args[:next_page_token] if args.key?(:next_page_token)
+        end
+      end
+      
+      # 
+      class LookupGroupNameResponse
+        include Google::Apis::Core::Hashable
+      
+        # [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        # Group in the format: `groups/`group_id``, where `group_id` is the unique id
+        # assigned to the Group.
+        # Corresponds to the JSON property `name`
+        # @return [String]
+        attr_accessor :name
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @name = args[:name] if args.key?(:name)
+        end
+      end
+      
+      # 
+      class LookupMembershipNameResponse
+        include Google::Apis::Core::Hashable
+      
+        # [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        # Membership being looked up.
+        # Format: `groups/`group_id`/memberships/`member_id``, where `group_id` is
+        # the unique id assigned to the Group to which Membership belongs to, and
+        # `member_id` is the unique id assigned to the member.
+        # Corresponds to the JSON property `name`
+        # @return [String]
+        attr_accessor :name
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @name = args[:name] if args.key?(:name)
+        end
+      end
+      
+      # Resource representing a Membership within a Group
+      class Membership
+        include Google::Apis::Core::Hashable
+      
+        # Creation timestamp of the Membership.
+        # Corresponds to the JSON property `createTime`
+        # @return [String]
+        attr_accessor :create_time
+      
+        # An EntityKey uniquely identifies an Entity. Namespaces are used to provide
+        # isolation for ids.  A single Id can be reused across namespaces but the
+        # combination of a namespace and an id must be unique.
+        # Corresponds to the JSON property `memberKey`
+        # @return [Google::Apis::CloudidentityV1beta1::EntityKey]
+        attr_accessor :member_key
+      
+        # [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        # Membership in the format: `groups/`group_id`/memberships/`member_id``,
+        # where group_id is the unique id assigned to the Group to which Membership
+        # belongs to, and member_id is the unique id assigned to the member
+        # Must be left blank while creating a Membership.
+        # Corresponds to the JSON property `name`
+        # @return [String]
+        attr_accessor :name
+      
+        # Roles for a member within the Group.
+        # Currently supported MembershipRoles: `"MEMBER"`.
+        # Corresponds to the JSON property `roles`
+        # @return [Array<Google::Apis::CloudidentityV1beta1::MembershipRole>]
+        attr_accessor :roles
+      
+        # Last updated timestamp of the Membership.
+        # Corresponds to the JSON property `updateTime`
+        # @return [String]
+        attr_accessor :update_time
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @create_time = args[:create_time] if args.key?(:create_time)
+          @member_key = args[:member_key] if args.key?(:member_key)
+          @name = args[:name] if args.key?(:name)
+          @roles = args[:roles] if args.key?(:roles)
+          @update_time = args[:update_time] if args.key?(:update_time)
+        end
+      end
+      
+      # Resource representing a role within a Membership.
+      class MembershipRole
+        include Google::Apis::Core::Hashable
+      
+        # MembershipRole in string format.
+        # Currently supported MembershipRoles: `"MEMBER"`.
+        # Corresponds to the JSON property `name`
+        # @return [String]
+        attr_accessor :name
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @name = args[:name] if args.key?(:name)
+        end
+      end
+      
+      # This resource represents a long-running operation that is the result of a
+      # network API call.
+      class Operation
+        include Google::Apis::Core::Hashable
+      
+        # If the value is `false`, it means the operation is still in progress.
+        # If `true`, the operation is completed, and either `error` or `response` is
+        # available.
+        # Corresponds to the JSON property `done`
+        # @return [Boolean]
+        attr_accessor :done
+        alias_method :done?, :done
+      
+        # The `Status` type defines a logical error model that is suitable for different
+        # programming environments, including REST APIs and RPC APIs. It is used by
+        # [gRPC](https://github.com/grpc). The error model is designed to be:
+        # - Simple to use and understand for most users
+        # - Flexible enough to meet unexpected needs
+        # # Overview
+        # The `Status` message contains three pieces of data: error code, error message,
+        # and error details. The error code should be an enum value of
+        # google.rpc.Code, but it may accept additional error codes if needed.  The
+        # error message should be a developer-facing English message that helps
+        # developers *understand* and *resolve* the error. If a localized user-facing
+        # error message is needed, put the localized message in the error details or
+        # localize it in the client. The optional error details may contain arbitrary
+        # information about the error. There is a predefined set of error detail types
+        # in the package `google.rpc` that can be used for common error conditions.
+        # # Language mapping
+        # The `Status` message is the logical representation of the error model, but it
+        # is not necessarily the actual wire format. When the `Status` message is
+        # exposed in different client libraries and different wire protocols, it can be
+        # mapped differently. For example, it will likely be mapped to some exceptions
+        # in Java, but more likely mapped to some error codes in C.
+        # # Other uses
+        # The error model and the `Status` message can be used in a variety of
+        # environments, either with or without APIs, to provide a
+        # consistent developer experience across different environments.
+        # Example uses of this error model include:
+        # - Partial errors. If a service needs to return partial errors to the client,
+        # it may embed the `Status` in the normal response to indicate the partial
+        # errors.
+        # - Workflow errors. A typical workflow has multiple steps. Each step may
+        # have a `Status` message for error reporting.
+        # - Batch operations. If a client uses batch request and batch response, the
+        # `Status` message should be used directly inside batch response, one for
+        # each error sub-response.
+        # - Asynchronous operations. If an API call embeds asynchronous operation
+        # results in its response, the status of those operations should be
+        # represented directly using the `Status` message.
+        # - Logging. If some API errors are stored in logs, the message `Status` could
+        # be used directly after any stripping needed for security/privacy reasons.
+        # Corresponds to the JSON property `error`
+        # @return [Google::Apis::CloudidentityV1beta1::Status]
+        attr_accessor :error
+      
+        # Service-specific metadata associated with the operation.  It typically
+        # contains progress information and common metadata such as create time.
+        # Some services might not provide such metadata.  Any method that returns a
+        # long-running operation should document the metadata type, if any.
+        # Corresponds to the JSON property `metadata`
+        # @return [Hash<String,Object>]
+        attr_accessor :metadata
+      
+        # The server-assigned name, which is only unique within the same service that
+        # originally returns it. If you use the default HTTP mapping, the
+        # `name` should have the format of `operations/some/unique/name`.
+        # Corresponds to the JSON property `name`
+        # @return [String]
+        attr_accessor :name
+      
+        # The normal response of the operation in case of success.  If the original
+        # method returns no data on success, such as `Delete`, the response is
+        # `google.protobuf.Empty`.  If the original method is standard
+        # `Get`/`Create`/`Update`, the response should be the resource.  For other
+        # methods, the response should have the type `XxxResponse`, where `Xxx`
+        # is the original method name.  For example, if the original method name
+        # is `TakeSnapshot()`, the inferred response type is
+        # `TakeSnapshotResponse`.
+        # Corresponds to the JSON property `response`
+        # @return [Hash<String,Object>]
+        attr_accessor :response
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @done = args[:done] if args.key?(:done)
+          @error = args[:error] if args.key?(:error)
+          @metadata = args[:metadata] if args.key?(:metadata)
+          @name = args[:name] if args.key?(:name)
+          @response = args[:response] if args.key?(:response)
+        end
+      end
+      
+      # 
+      class SearchGroupsResponse
+        include Google::Apis::Core::Hashable
+      
+        # List of Groups satisfying the search query.
+        # Corresponds to the JSON property `groups`
+        # @return [Array<Google::Apis::CloudidentityV1beta1::Group>]
+        attr_accessor :groups
+      
+        # Token to retrieve the next page of results, or empty if there are no
+        # more results available for specified query.
+        # Corresponds to the JSON property `nextPageToken`
+        # @return [String]
+        attr_accessor :next_page_token
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @groups = args[:groups] if args.key?(:groups)
+          @next_page_token = args[:next_page_token] if args.key?(:next_page_token)
+        end
+      end
+      
+      # The `Status` type defines a logical error model that is suitable for different
+      # programming environments, including REST APIs and RPC APIs. It is used by
+      # [gRPC](https://github.com/grpc). The error model is designed to be:
+      # - Simple to use and understand for most users
+      # - Flexible enough to meet unexpected needs
+      # # Overview
+      # The `Status` message contains three pieces of data: error code, error message,
+      # and error details. The error code should be an enum value of
+      # google.rpc.Code, but it may accept additional error codes if needed.  The
+      # error message should be a developer-facing English message that helps
+      # developers *understand* and *resolve* the error. If a localized user-facing
+      # error message is needed, put the localized message in the error details or
+      # localize it in the client. The optional error details may contain arbitrary
+      # information about the error. There is a predefined set of error detail types
+      # in the package `google.rpc` that can be used for common error conditions.
+      # # Language mapping
+      # The `Status` message is the logical representation of the error model, but it
+      # is not necessarily the actual wire format. When the `Status` message is
+      # exposed in different client libraries and different wire protocols, it can be
+      # mapped differently. For example, it will likely be mapped to some exceptions
+      # in Java, but more likely mapped to some error codes in C.
+      # # Other uses
+      # The error model and the `Status` message can be used in a variety of
+      # environments, either with or without APIs, to provide a
+      # consistent developer experience across different environments.
+      # Example uses of this error model include:
+      # - Partial errors. If a service needs to return partial errors to the client,
+      # it may embed the `Status` in the normal response to indicate the partial
+      # errors.
+      # - Workflow errors. A typical workflow has multiple steps. Each step may
+      # have a `Status` message for error reporting.
+      # - Batch operations. If a client uses batch request and batch response, the
+      # `Status` message should be used directly inside batch response, one for
+      # each error sub-response.
+      # - Asynchronous operations. If an API call embeds asynchronous operation
+      # results in its response, the status of those operations should be
+      # represented directly using the `Status` message.
+      # - Logging. If some API errors are stored in logs, the message `Status` could
+      # be used directly after any stripping needed for security/privacy reasons.
+      class Status
+        include Google::Apis::Core::Hashable
+      
+        # The status code, which should be an enum value of google.rpc.Code.
+        # Corresponds to the JSON property `code`
+        # @return [Fixnum]
+        attr_accessor :code
+      
+        # A list of messages that carry the error details.  There is a common set of
+        # message types for APIs to use.
+        # Corresponds to the JSON property `details`
+        # @return [Array<Hash<String,Object>>]
+        attr_accessor :details
+      
+        # A developer-facing error message, which should be in English. Any
+        # user-facing error message should be localized and sent in the
+        # google.rpc.Status.details field, or localized by the client.
+        # Corresponds to the JSON property `message`
+        # @return [String]
+        attr_accessor :message
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @code = args[:code] if args.key?(:code)
+          @details = args[:details] if args.key?(:details)
+          @message = args[:message] if args.key?(:message)
+        end
+      end
+    end
+  end
+end
diff --git a/generated/google/apis/cloudidentity_v1beta1/representations.rb b/generated/google/apis/cloudidentity_v1beta1/representations.rb
new file mode 100644
index 000000000..a9bdf5927
--- /dev/null
+++ b/generated/google/apis/cloudidentity_v1beta1/representations.rb
@@ -0,0 +1,184 @@
+# Copyright 2015 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'date'
+require 'google/apis/core/base_service'
+require 'google/apis/core/json_representation'
+require 'google/apis/core/hashable'
+require 'google/apis/errors'
+
+module Google
+  module Apis
+    module CloudidentityV1beta1
+      
+      class EntityKey
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class Group
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class ListMembershipsResponse
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class LookupGroupNameResponse
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class LookupMembershipNameResponse
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class Membership
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class MembershipRole
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class Operation
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class SearchGroupsResponse
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class Status
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
+      class EntityKey
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :id, as: 'id'
+          property :namespace, as: 'namespace'
+        end
+      end
+      
+      class Group
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          collection :additional_group_keys, as: 'additionalGroupKeys', class: Google::Apis::CloudidentityV1beta1::EntityKey, decorator: Google::Apis::CloudidentityV1beta1::EntityKey::Representation
+      
+          property :create_time, as: 'createTime'
+          property :description, as: 'description'
+          property :display_name, as: 'displayName'
+          property :group_key, as: 'groupKey', class: Google::Apis::CloudidentityV1beta1::EntityKey, decorator: Google::Apis::CloudidentityV1beta1::EntityKey::Representation
+      
+          hash :labels, as: 'labels'
+          property :name, as: 'name'
+          property :parent, as: 'parent'
+          property :update_time, as: 'updateTime'
+        end
+      end
+      
+      class ListMembershipsResponse
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          collection :memberships, as: 'memberships', class: Google::Apis::CloudidentityV1beta1::Membership, decorator: Google::Apis::CloudidentityV1beta1::Membership::Representation
+      
+          property :next_page_token, as: 'nextPageToken'
+        end
+      end
+      
+      class LookupGroupNameResponse
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :name, as: 'name'
+        end
+      end
+      
+      class LookupMembershipNameResponse
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :name, as: 'name'
+        end
+      end
+      
+      class Membership
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :create_time, as: 'createTime'
+          property :member_key, as: 'memberKey', class: Google::Apis::CloudidentityV1beta1::EntityKey, decorator: Google::Apis::CloudidentityV1beta1::EntityKey::Representation
+      
+          property :name, as: 'name'
+          collection :roles, as: 'roles', class: Google::Apis::CloudidentityV1beta1::MembershipRole, decorator: Google::Apis::CloudidentityV1beta1::MembershipRole::Representation
+      
+          property :update_time, as: 'updateTime'
+        end
+      end
+      
+      class MembershipRole
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :name, as: 'name'
+        end
+      end
+      
+      class Operation
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :done, as: 'done'
+          property :error, as: 'error', class: Google::Apis::CloudidentityV1beta1::Status, decorator: Google::Apis::CloudidentityV1beta1::Status::Representation
+      
+          hash :metadata, as: 'metadata'
+          property :name, as: 'name'
+          hash :response, as: 'response'
+        end
+      end
+      
+      class SearchGroupsResponse
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          collection :groups, as: 'groups', class: Google::Apis::CloudidentityV1beta1::Group, decorator: Google::Apis::CloudidentityV1beta1::Group::Representation
+      
+          property :next_page_token, as: 'nextPageToken'
+        end
+      end
+      
+      class Status
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :code, as: 'code'
+          collection :details, as: 'details'
+          property :message, as: 'message'
+        end
+      end
+    end
+  end
+end
diff --git a/generated/google/apis/cloudidentity_v1beta1/service.rb b/generated/google/apis/cloudidentity_v1beta1/service.rb
new file mode 100644
index 000000000..0da8e17c6
--- /dev/null
+++ b/generated/google/apis/cloudidentity_v1beta1/service.rb
@@ -0,0 +1,477 @@
+# Copyright 2015 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+require 'google/apis/core/base_service'
+require 'google/apis/core/json_representation'
+require 'google/apis/core/hashable'
+require 'google/apis/errors'
+
+module Google
+  module Apis
+    module CloudidentityV1beta1
+      # Cloud Identity API
+      #
+      # API for provisioning and managing identity resources.
+      #
+      # @example
+      #    require 'google/apis/cloudidentity_v1beta1'
+      #
+      #    Cloudidentity = Google::Apis::CloudidentityV1beta1 # Alias the module
+      #    service = Cloudidentity::CloudIdentityService.new
+      #
+      # @see https://cloud.google.com/identity/
+      class CloudIdentityService < Google::Apis::Core::BaseService
+        # @return [String]
+        #  API key. Your API key identifies your project and provides you with API access,
+        #  quota, and reports. Required unless you provide an OAuth 2.0 token.
+        attr_accessor :key
+
+        # @return [String]
+        #  Available to use for quota purposes for server-side applications. Can be any
+        #  arbitrary string assigned to a user, but should not exceed 40 characters.
+        attr_accessor :quota_user
+
+        def initialize
+          super('https://cloudidentity.googleapis.com/', '')
+          @batch_path = 'batch'
+        end
+        
+        # Creates a Group.
+        # @param [Google::Apis::CloudidentityV1beta1::Group] group_object
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::Operation] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::Operation]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def create_group(group_object = nil, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:post, 'v1beta1/groups', options)
+          command.request_representation = Google::Apis::CloudidentityV1beta1::Group::Representation
+          command.request_object = group_object
+          command.response_representation = Google::Apis::CloudidentityV1beta1::Operation::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::Operation
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Deletes a Group.
+        # @param [String] name
+        #   [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        #   Group in the format: `groups/`group_id``, where `group_id` is the unique id
+        #   assigned to the Group.
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::Operation] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::Operation]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def delete_group(name, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:delete, 'v1beta1/{+name}', options)
+          command.response_representation = Google::Apis::CloudidentityV1beta1::Operation::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::Operation
+          command.params['name'] = name unless name.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Retrieves a Group.
+        # @param [String] name
+        #   [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        #   Group in the format: `groups/`group_id``, where `group_id` is the unique id
+        #   assigned to the Group.
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::Group] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::Group]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def get_group(name, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:get, 'v1beta1/{+name}', options)
+          command.response_representation = Google::Apis::CloudidentityV1beta1::Group::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::Group
+          command.params['name'] = name unless name.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Looks up [resource
+        # name](https://cloud.google.com/apis/design/resource_names) of a Group by
+        # its EntityKey.
+        # @param [String] group_key_id
+        #   The id of the entity within the given namespace. The id must be unique
+        #   within its namespace.
+        # @param [String] group_key_namespace
+        #   Namespaces provide isolation for ids, i.e an id only needs to be unique
+        #   within its namespace.
+        #   Namespaces are currently only created as part of IdentitySource creation
+        #   from Admin Console. A namespace `"identitysources/`identity_source_id`"` is
+        #   created corresponding to every Identity Source `identity_source_id`.
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::LookupGroupNameResponse] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::LookupGroupNameResponse]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def lookup_group(group_key_id: nil, group_key_namespace: nil, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:get, 'v1beta1/groups:lookup', options)
+          command.response_representation = Google::Apis::CloudidentityV1beta1::LookupGroupNameResponse::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::LookupGroupNameResponse
+          command.query['groupKey.id'] = group_key_id unless group_key_id.nil?
+          command.query['groupKey.namespace'] = group_key_namespace unless group_key_namespace.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Updates a Group.
+        # @param [String] name
+        #   [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        #   Group in the format: `groups/`group_id``, where group_id is the unique id
+        #   assigned to the Group.
+        #   Must be left blank while creating a Group
+        # @param [Google::Apis::CloudidentityV1beta1::Group] group_object
+        # @param [String] update_mask
+        #   Editable fields: `display_name`, `description`
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::Operation] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::Operation]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def patch_group(name, group_object = nil, update_mask: nil, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:patch, 'v1beta1/{+name}', options)
+          command.request_representation = Google::Apis::CloudidentityV1beta1::Group::Representation
+          command.request_object = group_object
+          command.response_representation = Google::Apis::CloudidentityV1beta1::Operation::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::Operation
+          command.params['name'] = name unless name.nil?
+          command.query['updateMask'] = update_mask unless update_mask.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Searches for Groups.
+        # @param [Fixnum] page_size
+        #   The max number of groups to return.
+        #   GroupView | Default | Maximum
+        #   --------- | ------- | -------
+        #   BASIC     | 200     | 1000
+        #   FULL      | 50      | 500
+        # @param [String] page_token
+        #   The next_page_token value returned from a previous search request, if any.
+        # @param [String] query
+        #   Query string for performing search on groups.
+        #   Users can search on namespace and label attributes of groups.
+        #   EXACT match ('=') is supported on namespace, and CONTAINS match (':') is
+        #   supported on labels. This is a `required` field.
+        #   Multiple queries can be combined using `AND` operator. The operator is case
+        #   sensitive.
+        #   An example query would be:
+        #   "namespace=<namespace_value> AND labels:<labels_value>".
+        # @param [String] view
+        #   Group resource view to be returned. Defaults to [GroupView.BASIC]().
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::SearchGroupsResponse] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::SearchGroupsResponse]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def search_groups(page_size: nil, page_token: nil, query: nil, view: nil, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:get, 'v1beta1/groups:search', options)
+          command.response_representation = Google::Apis::CloudidentityV1beta1::SearchGroupsResponse::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::SearchGroupsResponse
+          command.query['pageSize'] = page_size unless page_size.nil?
+          command.query['pageToken'] = page_token unless page_token.nil?
+          command.query['query'] = query unless query.nil?
+          command.query['view'] = view unless view.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Creates a Membership.
+        # @param [String] parent
+        #   [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        #   Group to create Membership within. Format: `groups/`group_id``, where
+        #   `group_id` is the unique id assigned to the Group.
+        # @param [Google::Apis::CloudidentityV1beta1::Membership] membership_object
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::Operation] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::Operation]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def create_group_membership(parent, membership_object = nil, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:post, 'v1beta1/{+parent}/memberships', options)
+          command.request_representation = Google::Apis::CloudidentityV1beta1::Membership::Representation
+          command.request_object = membership_object
+          command.response_representation = Google::Apis::CloudidentityV1beta1::Operation::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::Operation
+          command.params['parent'] = parent unless parent.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Deletes a Membership.
+        # @param [String] name
+        #   [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        #   Membership to be deleted.
+        #   Format: `groups/`group_id`/memberships/`member_id``, where `group_id` is
+        #   the unique id assigned to the Group to which Membership belongs to, and
+        #   member_id is the unique id assigned to the member.
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::Operation] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::Operation]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def delete_group_membership(name, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:delete, 'v1beta1/{+name}', options)
+          command.response_representation = Google::Apis::CloudidentityV1beta1::Operation::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::Operation
+          command.params['name'] = name unless name.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Retrieves a Membership.
+        # @param [String] name
+        #   [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        #   Membership to be retrieved.
+        #   Format: `groups/`group_id`/memberships/`member_id``, where `group_id` is
+        #   the unique id assigned to the Group to which Membership belongs to, and
+        #   `member_id` is the unique id assigned to the member.
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::Membership] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::Membership]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def get_group_membership(name, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:get, 'v1beta1/{+name}', options)
+          command.response_representation = Google::Apis::CloudidentityV1beta1::Membership::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::Membership
+          command.params['name'] = name unless name.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # List Memberships within a Group.
+        # @param [String] parent
+        #   [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        #   Group to list Memberships within.
+        #   Format: `groups/`group_id``, where `group_id` is the unique id assigned to
+        #   the Group.
+        # @param [Fixnum] page_size
+        #   Maximum number of Memberships to return.
+        #   MembershipView | Default | Maximum
+        #   -------------- | ------- | -------
+        #   BASIC          | 200     | 1000
+        #   FULL           | 50      | 500
+        # @param [String] page_token
+        #   The next_page_token value returned from a previous list request, if any
+        # @param [String] view
+        #   Membership resource view to be returned. Defaults to MembershipView.BASIC.
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::ListMembershipsResponse] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::ListMembershipsResponse]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def list_group_memberships(parent, page_size: nil, page_token: nil, view: nil, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:get, 'v1beta1/{+parent}/memberships', options)
+          command.response_representation = Google::Apis::CloudidentityV1beta1::ListMembershipsResponse::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::ListMembershipsResponse
+          command.params['parent'] = parent unless parent.nil?
+          command.query['pageSize'] = page_size unless page_size.nil?
+          command.query['pageToken'] = page_token unless page_token.nil?
+          command.query['view'] = view unless view.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+        
+        # Looks up [resource
+        # name](https://cloud.google.com/apis/design/resource_names) of a Membership
+        # within a Group by member's EntityKey.
+        # @param [String] parent
+        #   [Resource name](https://cloud.google.com/apis/design/resource_names) of the
+        #   Group to lookup Membership within.
+        #   Format: `groups/`group_id``, where `group_id` is the unique id assigned to
+        #   the Group.
+        # @param [String] member_key_id
+        #   The id of the entity within the given namespace. The id must be unique
+        #   within its namespace.
+        # @param [String] member_key_namespace
+        #   Namespaces provide isolation for ids, i.e an id only needs to be unique
+        #   within its namespace.
+        #   Namespaces are currently only created as part of IdentitySource creation
+        #   from Admin Console. A namespace `"identitysources/`identity_source_id`"` is
+        #   created corresponding to every Identity Source `identity_source_id`.
+        # @param [String] fields
+        #   Selector specifying which fields to include in a partial response.
+        # @param [String] quota_user
+        #   Available to use for quota purposes for server-side applications. Can be any
+        #   arbitrary string assigned to a user, but should not exceed 40 characters.
+        # @param [Google::Apis::RequestOptions] options
+        #   Request-specific options
+        #
+        # @yield [result, err] Result & error if block supplied
+        # @yieldparam result [Google::Apis::CloudidentityV1beta1::LookupMembershipNameResponse] parsed result object
+        # @yieldparam err [StandardError] error object if request failed
+        #
+        # @return [Google::Apis::CloudidentityV1beta1::LookupMembershipNameResponse]
+        #
+        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
+        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
+        # @raise [Google::Apis::AuthorizationError] Authorization is required
+        def lookup_group_membership(parent, member_key_id: nil, member_key_namespace: nil, fields: nil, quota_user: nil, options: nil, &block)
+          command =  make_simple_command(:get, 'v1beta1/{+parent}/memberships:lookup', options)
+          command.response_representation = Google::Apis::CloudidentityV1beta1::LookupMembershipNameResponse::Representation
+          command.response_class = Google::Apis::CloudidentityV1beta1::LookupMembershipNameResponse
+          command.params['parent'] = parent unless parent.nil?
+          command.query['memberKey.id'] = member_key_id unless member_key_id.nil?
+          command.query['memberKey.namespace'] = member_key_namespace unless member_key_namespace.nil?
+          command.query['fields'] = fields unless fields.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+          execute_or_queue_command(command, &block)
+        end
+
+        protected
+
+        def apply_command_defaults(command)
+          command.query['key'] = key unless key.nil?
+          command.query['quotaUser'] = quota_user unless quota_user.nil?
+        end
+      end
+    end
+  end
+end
diff --git a/generated/google/apis/pubsub_v1.rb b/generated/google/apis/pubsub_v1.rb
index a9db66f3f..1b1581c37 100644
--- a/generated/google/apis/pubsub_v1.rb
+++ b/generated/google/apis/pubsub_v1.rb
@@ -25,7 +25,7 @@ module Google
     # @see https://cloud.google.com/pubsub/docs
     module PubsubV1
       VERSION = 'V1'
-      REVISION = '20181119'
+      REVISION = '20181213'
 
       # View and manage your data across Google Cloud Platform services
       AUTH_CLOUD_PLATFORM = 'https://www.googleapis.com/auth/cloud-platform'
diff --git a/generated/google/apis/pubsub_v1/classes.rb b/generated/google/apis/pubsub_v1/classes.rb
index d08304f60..fd858801a 100644
--- a/generated/google/apis/pubsub_v1/classes.rb
+++ b/generated/google/apis/pubsub_v1/classes.rb
@@ -365,8 +365,9 @@ module Google
         # The new ack deadline with respect to the time this request was sent to
         # the Pub/Sub system. For example, if the value is 10, the new
         # ack deadline will expire 10 seconds after the `ModifyAckDeadline` call
-        # was made. Specifying zero may immediately make the message available for
-        # another pull request.
+        # was made. Specifying zero might immediately make the message available for
+        # delivery to another subscriber client. This typically results in an
+        # increase in the rate of message redeliveries (that is, duplicates).
         # The minimum deadline you can specify is 0 seconds.
         # The maximum deadline you can specify is 600 seconds (10 minutes).
         # Corresponds to the JSON property `ackDeadlineSeconds`