code: def __repr__(self) -> str:
      return self.__class__.__name__ + "()"
  
imports: from typing import Optional, Tuple
  import torch
  from torch import nn, Tensor
  from .None import functional, InterpolationMode
label_desc: Use image node_id 2 for calling the OpticalFlow obj's underlying member method code with example usage: obj.__repr__() and returns: unknown