code: def _predict(self, item, long=None):
      if long:
          time.sleep(2)
      else:
          time.sleep(1)
      return item
  
imports: import math
  import time
  from typing import Any, Dict
  import pytest
  from modelkit.core import ModelLibrary
  from modelkit.core.model import Model
  from modelkit.core.profilers.simple import SimpleProfiler
label_desc: Use image node_id 1 for calling the ModelA obj's underlying member method code with example usage: obj._predict(item, long) and returns: item