def bothV(self, _id, label=None):
        raise NotImplementedError 

    # Index Proxy - Vertex
Contend for the leadership
dataset/ETHPy150Open espeed/bulbs/bulbs/base/client.py/Client.bothV--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/kazoo-2.0/kazoo/recipe/election.py/Election.run