code: def __init__(
      self,
      in_ch: int,
      out_ch: int,
      kernel_size: int = 3,
      dilation: int = 1,
      flag: bool = True,
  ):
      super().__init__(in_ch, out_ch, kernel_size, dilation)
      self.down_flag = flag
  
imports: from typing import Union, List
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 1 to create a new DownConvBNReLU object from inherited base classes: ConvBNReLU with example: obj = DownConvBNReLU(in_ch, out_ch, kernel_size, dilation, flag)