code: def _dt_over(self):
      if self.timeframe == TimeFrame.NoTimeFrame:
          dtcmp, dtkey = MAXINT, datetime.datetime.max
      else:
          # With >= 1.9.x the system datetime is in the strategy
          dt = self.strategy.datetime.datetime()
          dtcmp, dtkey = self._get_dt_cmpkey(dt)
  
      if self.dtcmp is None or dtcmp > self.dtcmp:
          self.dtkey, self.dtkey1 = dtkey, self.dtkey
          self.dtcmp, self.dtcmp1 = dtcmp, self.dtcmp
          return True
  
      return False
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import calendar
  from collections import OrderedDict
  import datetime
  import pprint
  import backtrader
  from backtrader import TimeFrame
  from backtrader.utils.py3 import MAXINT, with_metaclass
label_desc: Use image node_id 6 for calling the TimeFrameAnalyzerBase obj's underlying member method code with example usage: obj._dt_over() and returns: False, True