class_docstr: Conv Smoothing 2D.
  
  :param kernel_size: size of the convolving kernel.
code: def forward(self, x):
      return self.filter(x)
  
imports: import math
  import torch
  import torch.nn
  import torch.nn.functional
  from torch.nn.modules.utils import _quadruple
  from .base import Processor
label_desc: Use image node_id 2 for calling the ConvSmoothing2D obj's underlying member method code with example usage: obj.forward(x) and returns: self