code: def _plotlabel(self):
      plabels = [self.p.period, self.p.period_dfast]
      plabels += [self.p.movav] * self.p.notdefault("movav")
      return plabels
  
file_path: backtrader/backtrader/indicators/stochastic.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  from .None import Indicator, Max, MovAv, Highest, Lowest, DivByZero
label_desc: Use image node_id 1 for calling the _StochasticBase obj's underlying member method code with example usage: obj._plotlabel() and returns: plabels