code: def forward(self, *args):
      return self.loss(*args)
  
file_path: colossalai/colossalai/legacy/nn/loss/__init__.py
imports: from torch import nn
  from torch.nn.modules.loss import *
  from torch.nn.modules.loss import _Loss
  from colossalai.legacy.global_variables import tensor_parallel_env
  from colossalai.legacy.nn.layer.utils import get_tensor_parallel_mode
  from .loss_1d import VocabParallelCrossEntropyLoss1D
  from .loss_2d import CrossEntropyLoss2D, VocabParallelCrossEntropyLoss2D
  from .loss_2p5d import CrossEntropyLoss2p5D, VocabParallelCrossEntropyLoss2p5D
  from .loss_3d import CrossEntropyLoss3D, VocabParallelCrossEntropyLoss3D
label_desc: Use image node_id 2 for calling the CrossEntropyLoss obj's underlying member method code with example usage: obj.forward() and returns: self