docs: def save_relationship(self, relationship_form, *args, **kwargs):
          """Pass through to provider RelationshipAdminSession.update_relationship"""
          # Implemented from kitosid template for -
          # osid.resource.ResourceAdminSession.update_resource
          if relationship_form.is_for_update():
              return self.update_relationship(relationship_form, *args, **kwargs)
          else:
              return self.create_relationship(relationship_form, *args, **kwargs)