code: def forward(self, batch):
      input_1 = batch["input_1"]
      input_2 = batch["input_2"]
      return self.linear_1(input_1) + self.linear_2(input_2)
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from torch.utils.data import DataLoader
  from torchmetrics import Accuracy
  from ray import train
  from ray.train.lightning._lightning_utils import import_lightning
label_desc: Use image node_id 2 for calling the DoubleLinearModule obj's underlying member method code with example usage: obj.forward(batch) and returns: unknown