class_docstr: Base class for all ``dateutil`` ``tzinfo`` objects.
code: def _fold(self, dt):
      return getattr(dt, "fold", 0)
  
imports: from six import PY2
  from functools import wraps
  from datetime import datetime, timedelta, tzinfo
label_desc: Use image node_id 3 for calling the _tzinfo obj's underlying member method code with example usage: obj._fold(dt) and returns: getattr