def METHOD_NAME(self):
    # check the status of the c8y mapper
    c8y_mapper_status = self.startProcess(
        command=self.sudo,
        arguments=["systemctl", "status", "tedge-mapper-c8y.service"],
        stdouterr="c8y_mapper_status",
    )
    self.assertGrep(
        "c8y_mapper_status.out",
        " MQTT connection error: I/O: Connection refused (os error 111)",
        contains=False,
    )