def get(self, sid):
        """
        Constructs a AuthCallsCredentialListMappingContext

        :param sid: The unique string that identifies the resource

        :returns: twilio.rest.api.v2010.account.sip.domain.auth_types.auth_calls_mapping.auth_calls_credential_list_mapping.AuthCallsCredentialListMappingContext
        :rtype: twilio.rest.api.v2010.account.sip.domain.auth_types.auth_calls_mapping.auth_calls_credential_list_mapping.AuthCallsCredentialListMappingContext
        """
        return AuthCallsCredentialListMappingContext(
            self._version,
            account_sid=self._solution['account_sid'],
            domain_sid=self._solution['domain_sid'],
            sid=sid,
        )
Constructs a AuthCallsCredentialListMappingContext

        :param sid: The unique string that identifies the resource

        :returns: twilio.rest.api.v2010.account.sip.domain.auth_types.auth_calls_mapping.auth_calls_credential_list_mapping.AuthCallsCredentialListMappingContext
        :rtype: twilio.rest.api.v2010.account.sip.domain.auth_types.auth_calls_mapping.auth_calls_credential_list_mapping.AuthCallsCredentialListMappingContext