contactGroupResourceName property
The resource name for the contact group, assigned by the server.
An ASCII string, in the form of contactGroups/{contact_group_id}
. Only
contact_group_resource_name can be used for modifying memberships. Any
contact group membership can be removed, but only user group or
"myContacts" or "starred" system groups memberships can be added. A
contact must always have at least one contact group membership.
Implementation
core.String? contactGroupResourceName;