code: def add(self, op, assert_state=None):
      record = op.record
      if OpsFactory.is_op(record):
          self._write_func(record)
      self._fc.flow(record)
  
imports: import json
  import time
  from dataclasses import dataclass
  from enum import Enum
  import pytest
  from wandb.proto import wandb_internal_pb2
  from wandb.sdk.internal import flow_control, settings_static
  from wandb.sdk.lib import proto_util
  from wandb.sdk.wandb_settings import Settings
label_desc: Use image node_id 6 for calling the FlowTester obj's underlying member method code with example usage: obj.add(op, assert_state) without return types