def _add_successor(self, node, relative, trans_id):
        self._add_relative('successors', node, relative, trans_id)
:param instance: The instance to be signed or not
dataset/ETHPy150Open kakwa/pygraph_redis/pygraph_redis/directed_graph.py/Directed_graph._add_successor--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/pysaml2-2.4.0/src/saml2/sigver.py/signed_instance_factory