code: def forward(ctx, x):
      return x.clone()
  
file_path: pytorch/torch/_export/db/examples/autograd_function.py
imports: import torch
  from torch._export.db.case import export_case
label_desc: Use image node_id 1 for calling the MyAutogradFunction obj's underlying member method code with example usage: obj.forward(ctx, x) and returns: x