code: def op(self, **kwargs):
      new_op = self.Op(**kwargs)
      self._op_unique += 1
      new_op._id = self._op_unique
      return new_op
  
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 2 for calling the OpsFactory obj's underlying member method code with example usage: obj.op() and returns: new_op