docs: def get_family_admin_session(self):
          """Gets the ``OsidSession`` associated with the family administrative service.
  
          return: (osid.relationship.FamilyAdminSession) - a
                  ``FamilyAdminSession``
          raise:  OperationFailed - unable to complete request
          raise:  Unimplemented - ``supports_family_admin()`` is ``false``
          *compliance: optional -- This method must be implemented if ``supports_family_admin()`` is ``true``.*
  
          """
          if not self.supports_family_admin():
              raise Unimplemented()
          try:
              from . import sessions
          except ImportError:
              raise OperationFailed()
          try:
              session = sessions.FamilyAdminSession(proxy=self._proxy,
                                                    runtime=self._runtime)
          except AttributeError:
              raise OperationFailed()
          return session