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

        :param sid: Fetch by unique credential list Sid

        :returns: twilio.rest.api.v2010.account.sip.credential_list.CredentialListContext
        :rtype: twilio.rest.api.v2010.account.sip.credential_list.CredentialListContext
        """
        return CredentialListContext(self._version, account_sid=self._solution['account_sid'], sid=sid, )