def match_member_id(self, member_conf, current_member_confs):
        if current_member_confs is None:
            return None

        for curr_mem_conf in current_member_confs:
            if is_same_address(member_conf['host'], curr_mem_conf['host']):
                return curr_mem_conf['_id']

        return None

    ###########################################################################
Attempts to find an id for member_conf where fom current members confs
dataset/ETHPy150Open mongolab/mongoctl/mongoctl/objects/replicaset_cluster.py/ReplicaSetCluster.match_member_id