docstr: Clear any precomputed caches.
  Should be implemented by any module that caches any computation at test time.
code: def _clear_cache(self):
      """
      Clear any precomputed caches.
      Should be implemented by any module that caches any computation at test time.
      """
      pass
  
imports: import copy
  import inspect
  import itertools
  import operator
  from collections import OrderedDict
  from typing import Union
  import torch
  from linear_operator.operators import LinearOperator
  from torch import nn, Tensor
  from torch.distributions import Distribution
  from .constraints import Interval
label_desc: Use image node_id 3 for calling the Module obj's underlying member method code with example usage: obj._clear_cache() without return types