code: def computePredictionIntervals(self):
      # prediction intervals
      if self.mTimeInfo.mOptions.mAddPredictionIntervals:
          self.mPredictionIntervalsEstimator = (
              predint.cPredictionIntervalsEstimator()
          )
          self.mPredictionIntervalsEstimator.mModel = self
          self.mPredictionIntervalsEstimator.computePerformances()
      pass
  
imports: import pandas
  import numpy
  from .None import PredictionIntervals
  from .None import Plots
  from .None import Perf
  from .None import Utils
label_desc: Use image node_id 6 for calling the cTimeSeriesModel obj's underlying member method code with example usage: obj.computePredictionIntervals() without return types