code: def _send(self, command, data):
      send(command, data)
  
file_path: nni/nni/runtime/tuner_command_channel/legacy.py
imports: import logging
  import os
  import threading
  from .command_type import CommandType
label_desc: Use image node_id 3 for calling the LegacyCommandChannel obj's underlying member method code with example usage: obj._send(command, data) without return types