Request message for [ListEntryGroups][google.cloud.datacatalog.v1beta1
.DataCatalog.ListEntryGroups].
.. attribute:: parent
Required. The name of the location that contains the entry
groups, which can be provided in URL format. Example: -
projects/{project_id}/locations/{location}
Optional. Token that specifies which page is requested. If
empty, the first page is returned.