code: def forward(self, x):
      return self.model(x)
  
file_path: BigDL/python/nano/benchmark/torch_inference_optimizer/optimize.py
imports: import os
  import torch
  from torch import nn
  from torch.utils.data import DataLoader
  from torch.utils.data import TensorDataset
  from torchvision import transforms
  from torchvision.datasets import CIFAR10
  from bigdl.nano.pytorch.vision.models import vision
  from bigdl.nano.pytorch import InferenceOptimizer
label_desc: Use image node_id 2 for calling the ResNet18 obj's underlying member method code with example usage: obj.forward(x) and returns: self