def _create_membership(self, pipeline=None):
        """Adds the id of the object to the set of all objects of the same
        class.
        """
        Set(self._key['all'], pipeline=pipeline).add(self.id)
def _create_membership ( self , pipeline = None ) : Set ( self . _key [ 'all' ] , pipeline = pipeline ) . add ( self . id )
Adds the id of the object to the set of all objects of the same
        class.