<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _open_debug_interface(self, conn_id, callback, connection_string=None):
 """Enable debug interface for this IOTile device Args: conn_id (int):
 the unique identifier for the connection callback (callback):
 Callback to be called when this command finishes callback(conn_id, adapter_id, success, failure_reason) """

        self._try_connect(connection_string)
        callback(conn_id, self.id, True, None)