code: def forward(self, *args):
      return self.acc(*args)
  
file_path: colossalai/colossalai/legacy/nn/metric/__init__.py
imports: from torch import nn
  from colossalai.legacy.nn.layer.utils import get_tensor_parallel_mode
  from ._utils import calc_acc
  from .accuracy_2d import Accuracy2D
  from .accuracy_2p5d import Accuracy2p5D
  from .accuracy_3d import Accuracy3D
label_desc: Use image node_id 2 for calling the Accuracy obj's underlying member method code with example usage: obj.forward() and returns: self