'Generate an instance context for the instance, the context is capable of
performing various actions.  All instance actions are proxied to the context
:returns: PhoneNumberContext for this PhoneNumberInstance
:rtype: twilio.rest.trunking.v1.trunk.phone_number.PhoneNumberContext'

@property
def _proxy(self):

    if (self._context is None):
        self._context = PhoneNumberContext(self._version, trunk_sid=self._solution['trunk_sid'], sid=self._solution['sid'])
    return self._context
