code: def _patch_call(instance, func):
      class _(type(instance)):
          def __call__(self, *arg, **kwarg):
              return func(*arg, **kwarg)
  
      instance.__class__ = _
  
imports: import functools
  import traceback
  import warnings
  import torch
  from packaging import version
  import torchbearer
  import sys
label_desc: Use image node_id 3 for calling a global function with example usage: _patch_call(instance, func) and returns: func