class_docstr: This command checks the meta-data of the package.
docstr: Counts the number of warnings that occurs.
code: def warn(self, msg):
      """Counts the number of warnings that occurs."""
      self._warnings += 1
      return Command.warn(self, msg)
  
file_path: catboost/contrib/python/setuptools/py3/setuptools/_distutils/command/check.py
imports: import contextlib
  from ..core import Command
  from ..errors import DistutilsSetupError
label_desc: Use image node_id 3 for calling the check obj's underlying member method code with example usage: obj.warn(msg) and returns: Command