def is_entity_header(header):
    return header.lower() in _entity_headers
Add all the edges in ebunch.
dataset/ETHPy150Open Eforcers/gae-flask-todo/lib/werkzeug/http.py/is_entity_header--crossover with--dataset/ETHPy150Open networkx/networkx/networkx/classes/tests/timingclasses.py/TimingMultiGraph.add_edges_from