code: def compute_out_features(self, idx: int, up_scale: int) -> int:
      return 1 if idx == up_scale - 1 else self.constant_features
  
imports: from __future__ import annotations
  from collections import OrderedDict
  from typing import Optional
  import torch
  import torch.nn.functional
  from torch import nn
  from kornia.core import Module, Tensor, concatenate
  from kornia.core.check import KORNIA_CHECK
  from kornia.utils import map_location_to_cpu
label_desc: Use image node_id 3 for calling the UpConvBlock obj's underlying member method code with example usage: obj.compute_out_features(idx, up_scale) and returns: unknown