Required. The project whose groups are to be listed. The
format is: :: projects/[PROJECT_ID_OR_NUMBER]
A group name. The format is: ::
projects/[PROJECT_ID_OR_NUMBER]/groups/[GROUP_ID] Returns
groups whose parent_name field contains the group name. If
no groups have this parent, the results are empty.
A group name. The format is: ::
projects/[PROJECT_ID_OR_NUMBER]/groups/[GROUP_ID] Returns the
descendants of the specified group. This is a superset of the
results returned by the children_of_group filter, and
includes children-of-children, and so forth.
If this field is not empty then it must contain the
next_page_token value returned by a previous call to this
method. Using this field causes the method to return
additional results from the previous method call.