class_docstr: Unet utilizing dilation
class_docstr_tok: ["Unet","utilizing","dilation"]
code: def _transition(in_channels, out_channels):
      layers = []
      layers.append(
          Conv_transition([1, 3, 5], in_channels, out_channels)
      )
      return nn.Sequential(*layers)
  
imports: import torch
  import torch.nn
label_desc: Use image node_id 3 for calling the UNetDilated obj's underlying member method code with example usage: obj._transition(in_channels, out_channels) and returns: nn