def METHOD_NAME(self):
    # disconnect the test
    self.tedge_disconnect_c8y()
    # unset the device certificate path
    unset_cert_path = self.startProcess(
        command=self.sudo,
        arguments=[self.tedge, "config", "unset", "device.cert_path"],
        stdouterr="unset_cert_path",
    )
    # unset the device key path
    unset_key_path = self.startProcess(
        command=self.sudo,
        arguments=[self.tedge, "config", "unset", "device.key_path"],
        stdouterr="unset_key_path",
    )
    # delete the temporary directory
    remove_cert_dir = self.startProcess(
        command=self.sudo,
        arguments=["rm", "-rf", "/tmp/test-device-certs"],
        stdouterr="remove_cert_dir",
    )