code: def create_head_layer(self):
      return SimpleUpsampleHead(
          self.feature_channel,
          [
              self.feature_channel,
              self.feature_channel // 2,
              self.feature_channel // 4,
          ],
      )
  
imports: import torch
  import torch.nn
  import torch.nn.functional
  from backbones.upsample_head import SimpleUpsampleHead
label_desc: Use image node_id 2 for calling the SimpleDetectionDecoder obj's underlying member method code with example usage: obj.create_head_layer() and returns: SimpleUpsampleHead