def __init__(self, public_key, private_key, config):
        self._public_key = public_key
        self._private_key = private_key
        self._contacts = {}
        self.config = config
Testing use with the Python `copy` module.
dataset/ETHPy150Open hpk42/p4p/friendsecure/node.py/Node.__init__--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/gis/geos/tests/test_geos.py/GEOSTest.test22_copy