code: def gettz_db_metadata():
      """Get the zonefile metadata
  
      See `zonefile_metadata`_
  
      :returns:
          A dictionary with the database metadata
  
      .. deprecated:: 2.6
          See deprecation warning in :func:`zoneinfo.gettz`. To get metadata,
          query the attribute ``zoneinfo.ZoneInfoFile.metadata``.
      """
      warnings.warn(
          "zoneinfo.gettz_db_metadata() will be removed in future "
          "versions, to use the dateutil-provided zoneinfo files, "
          "ZoneInfoFile object and query the 'metadata' attribute "
          "instead. See the documentation for details.",
          DeprecationWarning,
      )
  
      if len(_CLASS_ZONE_INSTANCE) == 0:
          _CLASS_ZONE_INSTANCE.append(
              ZoneInfoFile(getzoneinfofile_stream())
          )
      return _CLASS_ZONE_INSTANCE[0].metadata
  
file_path: catboost/contrib/python/python-dateutil/py2/dateutil/zoneinfo/__init__.py
imports: import warnings
  import json
  from tarfile import TarFile
  from pkgutil import get_data
  from io import BytesIO
  from dateutil.tz import tzfile
label_desc: Use image node_id 4 for calling a global function with example usage: gettz_db_metadata() and returns: _CLASS_ZONE_INSTANCE