'Fetch a KeyInstance
:returns: Fetched KeyInstance
:rtype: twilio.rest.api.v2010.account.key.KeyInstance'

def fetch(self):

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