'Fetch a PhoneNumberInstance
:returns: Fetched PhoneNumberInstance
:rtype: twilio.rest.preview.proxy.service.phone_number.PhoneNumberInstance'

def fetch(self):

    params = values.of({})
    payload = self._version.fetch('GET', self._uri, params=params)
    return PhoneNumberInstance(self._version, payload, service_sid=self._solution['service_sid'], sid=self._solution['sid'])
