code: def forward(self, feats):
      h, w = feats.size(2), feats.size(3)
      priors = [
          F.upsample(input=stage(feats), size=(h, w), mode="bilinear")
          for stage in self.stages
      ] + [feats]
      bottle = self.bottleneck(torch.cat(priors, 1))
      return self.relu(bottle)
  
file_path: pywick/pywick/models/segmentation/lexpsp.py
imports: from .lex_extractors import *
label_desc: Use image node_id 3 for calling the PSPModule obj's underlying member method code with example usage: obj.forward(feats) and returns: self