code: def _proxy(self):
          
          if self._context is None:
              self._context = PhoneNumberContext(self._version, phone_number=self._solution['phone_number'], )
          return self._context
docs: 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.lookups.v1.phone_number.PhoneNumberContext