src/transformers/models/glpn/modeling_glpn.py/GLPNDecoderStage/forward
class GLPNDecoderStage:    def forward(self, hidden_state, residual=None):
        hidden_state = self.convolution(hidden_state)
        if residual is not None:
            hidden_state = self.fusion(hidden_state, residual)
        hidden_state = self.upsample(hidden_state)

        return hidden_state

        hidden_state = self.upsample(hidden_state)
        return hidden_state