code: def forward(self, x):
      down = self.act_function1(self.bn1(self.down_conv(x)))
      if self.dropout is not None:
          out = self.dropout(down)
      else:
          out = down
      out = self.ops(out)
      out = self.act_function2(torch.add(out, down))
      return out
  
imports: from __future__ import annotations
  import torch
  import torch.nn
  from monai.networks.blocks.convolutions import Convolution
  from monai.networks.layers.factories import Act, Conv, Dropout, Norm, split_args
  from monai.utils import deprecated_arg
label_desc: Use image node_id 2 for calling the DownTransition obj's underlying member method code with example usage: obj.forward(x) and returns: out