code: def forward(self, x: torch.Tensor):
      return self.model(x)
  
file_path: pytorch-lightning/examples/fabric/build_your_own_trainer/run.py
imports: import lightning
  import torch
  from torchmetrics.functional.classification.accuracy import accuracy
  from trainer import MyCustomTrainer
label_desc: Use image node_id 2 for calling the MNISTModule obj's underlying member method code with example usage: obj.forward(x) and returns: self