code: def __init__(self, dilation_radius: int):
      self.dilation_radius = dilation_radius
      self.layer = torch.nn.MaxPool2d(
          dilation_radius * 2 + 1, stride=1, padding=dilation_radius
      )
  
imports: import torch
  import dataset_keys
label_desc: Use image node_id 1 to create a new DilateValidMask object  with example: obj = DilateValidMask(dilation_radius)