Creates a membership for the calling Chat app, a user, or a Google Group. Creating memberships for other Chat apps isn't supported. When creating a membership, if the specified member has their auto-accept policy turned off, then they're invited, and must accept the space invitation before joining. Otherwise, creating a membership adds the member directly to the specified space. Supports the following types of authentication: - App authentication with administrator approval and the authorization scope: - https://www.googleapis.com/auth/chat.app.memberships - User authentication with one of the following authorization scopes: - https://www.googleapis.com/auth/chat.memberships - https://www.googleapis.com/auth/chat.memberships.app (to add the calling app to the space) - https://www.googleapis.com/auth/chat.import (import mode spaces only) - User authentication grants administrator privileges when an administrator account authenticates, use_admin_access is true, and the following authorization scope is used: - https://www.googleapis.com/auth/chat.admin.memberships App authentication is not supported for the following use cases: - Inviting users external to the Workspace organization that owns the space. - Adding a Google Group to a space. - Adding a Chat app to a space. For example usage, see: - Invite or add a user to a space. - Invite or add a Google Group to a space. - Add the Chat app to a space.