code: def change_input_channels(
      self, input_channels: int, mode="auto", **kwargs
  ):
      self.stem.conv1 = make_n_channel_input(
          self.stem.conv1, input_channels, mode, **kwargs
      )
      return self
  
imports: from collections import OrderedDict
  from typing import List
  import torch
  from torch import nn
  from .common import GenericTimmEncoder
  from ..common import EncoderModule, make_n_channel_input
  from ...None import ACT_RELU, get_activation_block
label_desc: Use image node_id 3 for calling the SKResNet18Encoder obj's underlying member method code with example usage: obj.change_input_channels(input_channels, mode) and returns: self