code: def forward(self, *inputs):
      inputs = self.on_forward_start(inputs)
      outputs = self.forward_step(*inputs)
      return self.on_forward_end(outputs)
  
file_path: BigDL/python/nano/src/bigdl/nano/utils/common/model.py
imports: from abc import ABC
  import yaml
  from pathlib import Path
  from bigdl.nano.utils.common import invalidInputError
label_desc: Use image node_id 1 for calling the AcceleratedModel obj's underlying member method code with example usage: obj.forward() and returns: self