code: def on_forward_start(self, inputs):
      self._model_exists_or_err()
      return inputs
  
imports: from pathlib import Path
  from tempfile import TemporaryDirectory
  from typing import List, Union
  from openvino.runtime import Core
  from bigdl.nano.utils.common import invalidInputError, _flatten, invalidOperationError
  from openvino.runtime import Model
  from openvino.runtime import AsyncInferQueue
  import numpy
  from datetime import datetime
  from .utils import save, OpenVINO_LESS_2022_3
label_desc: Use image node_id 2 for calling the OpenVINOModel obj's underlying member method code with example usage: obj.on_forward_start(inputs) and returns: inputs