code: def forward(self, x):
      return self.l1(x)
  
imports: import torch
  from lightning.pytorch.core.module import LightningModule
  from torch import Tensor, nn
  from torch.utils.data import DataLoader, Dataset
label_desc: Use image node_id 2 for calling the DeterministicModel obj's underlying member method code with example usage: obj.forward(x) and returns: self