code: def skip(msg=None):
      """Decorator factory - mark a test function for skipping from test suite.
  
      Parameters
      ----------
        msg : string
          Optional message to be added.
  
      Returns
      -------
         decorator : function
           Decorator, which, when applied to a function, causes SkipTest
           to be raised, with the optional message added.
      """
  
      return skipif(True, msg)
  
file_path: catboost/contrib/python/ipython/py2/IPython/testing/decorators.py
imports: import sys
  import os
  import tempfile
  import unittest
  import warnings
  from decorator import decorator
  from .ipunittest import ipdoctest, ipdocstring
  from IPython.external.decorators import *
  from IPython.utils.py3compat import string_types, which, PY2, PY3, PYPY
label_desc: Use image node_id 5 for calling a global function with example usage: skip(msg) and returns: skipif