code: def mixin_grpc_channel_options_parser(arg_group):
      """Mixing in arguments required by any class that extends :class:`AsynNewLoopRuntime` into the given parser.
      :param arg_group: the parser instance to which we add arguments
      """
  
      arg_group.add_argument(
          "--grpc-channel-options",
          action=KVAppendAction,
          metavar="KEY: VALUE",
          nargs="*",
          help="Dictionary of kwargs arguments that will be passed to the grpc channel as options when creating a channel, example : {'grpc.max_send_message_length': -1}. When max_attempts > 1, the 'grpc.service_config' option will not be applicable.",
          default=None,
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: mixin_grpc_channel_options_parser(arg_group) without return types