class_docstr: Basic transformation: 3x3, 3x3
class_docstr_tok: ["Basic","transformation",":","3x3",",","3x3"]
code: def forward(self, x):
      for layer in self.children():
          x = layer(x)
      return x
  
imports: import numpy
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 3 for calling the BasicTransform obj's underlying member method code with example usage: obj.forward(x) and returns: x