code: def null_decorator(*args, **kwargs):
      if len(kwargs) == 0 and len(args) == 1 and callable(args[0]):
          return args[0]
      else:
  
          def inner(func):
              return func
  
          return inner
  
imports: import importlib
  import traceback
  from contextlib import contextmanager
  from cuml.internals.device_support import CPU_ENABLED, GPU_ENABLED
  from cuml.internals import logger
label_desc: Use image node_id 2 for calling a global function with example usage: null_decorator() and returns: args, inner, func