code: def dump(self):
      logger = tsutil.get_pyaf_logger()
      lForecastColumn = str(self.mSignal) + "_Forecast"
      for h in range(0, self.mHorizon):
          lHorizonName = lForecastColumn + "_" + str(h + 1)
          hn = lHorizonName
          logger.info(
              "CONFIDENCE_INTERVAL_DUMP_FORECAST "
              + str(hn)
              + " "
              + str(self.mForecastPerformances[hn].mL2)
          )
  
file_path: atspy/atspy/TS/PredictionIntervals.py
imports: import pandas
  import numpy
  from .None import SignalDecomposition
  from .None import Perf
  from .None import Utils
label_desc: Use image node_id 4 for calling the cPredictionIntervalsEstimator obj's underlying member method code with example usage: obj.dump() without return types