docs: def put_file(self):
          """SCP copy the file from the local system to the remote device."""
          destination = "{}/{}".format(self.file_system, self.dest_file)
          self.scp_conn.scp_transfer_file(self.source_file, destination)
          # Must close the SCP connection to get the file written (flush)
          self.scp_conn.close()