code: def get_model_category(self):
      lModelCategory = (
          self.mTransformation.__class__.__name__,
          self.mTrend.__class__.__name__,
          self.mCycle.__class__.__name__,
          self.mAR.__class__.__name__,
      )
      lModelCategory = (
          self.mTransformation.mFormula
          + "_"
          + self.mTrend.mFormula
          + "_"
          + self.mCycle.mFormula
          + "_"
          + self.mAR.mFormula
      )
      return str(lModelCategory)
  
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 3 for calling the cTimeSeriesModel obj's underlying member method code with example usage: obj.get_model_category() and returns: str