def fetch(self):
params = values.of({})<EOL>payload = self._version.fetch(<EOL>'<STR_LIT:GET>',<EOL>self._uri,<EOL>params=params,<EOL>)<EOL>return AuthRegistrationsCredentialListMappingInstance(<EOL>self._version,<EOL>payload,<EOL>account_sid=self._solution['<STR_LIT>'],<EOL>domain_sid=self._solution['<STR_LIT>'],<EOL>sid=self._solution['<STR_LIT>'],<EOL>)<EOL>
Fetch a AuthRegistrationsCredentialListMappingInstance

:returns: Fetched AuthRegistrationsCredentialListMappingInstance
:rtype: twilio.rest.api.v2010.account.sip.domain.auth_types.auth_registrations_mapping.auth_registrations_credential_list_mapping.AuthRegistrationsCredentialListMappingInstance