code: def validation_enabled(is_validate=True):
      distribution_validation_status = is_validation_enabled()
      try:
          enable_validation(is_validate)
          yield
      finally:
          enable_validation(distribution_validation_status)
  
imports: import copy
  import ctypes
  import functools
  import numbers
  import weakref
  from contextlib import contextmanager
  import torch
  import torch.distributions
  from torch import logsumexp
  from torch.distributions.utils import broadcast_all
  from pyro.util import ignore_jit_warnings
  from ..None import settings
label_desc: Use image node_id 16 for calling a global function with example usage: validation_enabled(is_validate) without return types