code: def _send_mark(self) -> None:
      sender_mark = pb.SenderMarkRequest()
      record = self._interface._make_request(sender_mark=sender_mark)
      self._forward_record(record)
  
imports: import logging
  from typing import TYPE_CHECKING, Callable, Optional
  from wandb.proto import wandb_internal_pb2
  from wandb.proto import wandb_telemetry_pb2
  from ..interface.interface_queue import InterfaceQueue
  from ..lib import proto_util, telemetry, tracelog
  from .None import context, datastore, flow_control
  from .settings_static import SettingsStatic
label_desc: Use image node_id 4 for calling the WriteManager obj's underlying member method code with example usage: obj._send_mark() without return types