code: def forward(self, x: torch.Tensor) -> torch.Tensor:
      return self.transform(x)
  
imports: from abc import ABC, abstractmethod
  from typing import Optional
  from typing_extensions import Self
  import torch
  import numpy
  from torch.nn import Module
  from alibi_detect.exceptions import NotFittedError
label_desc: Use image node_id 3 for calling the BaseTransformTorch obj's underlying member method code with example usage: obj.forward(x) and returns: self