code: def forward(self, x: torch.Tensor) -> torch.Tensor:
      global forward_calls
      forward_calls += 1
      return self.linear2(self.dropout(self.linear1(x)))
  
file_path: allennlp/tests/nn/checkpoint/fairscale_checkpoint_wrapper_test.py
imports: import torch
  import torch.nn
  from allennlp.common.params import Params
  from allennlp.common.testing import multi_device
  from allennlp.nn.checkpoint.checkpoint_wrapper import CheckpointWrapper
  from allennlp.nn.checkpoint.fairscale_checkpoint_wrapper import FairScaleCheckpointWrapper
label_desc: Use image node_id 2 for calling the FeedForwardForTesting obj's underlying member method code with example usage: obj.forward(x) and returns: self