code: def addTrendInputVariables(self):
      self.mTime = self.mTimeInfo.mTime
      self.mSignal = self.mTimeInfo.mSignal
      self.mOutName = self.mSignal + "_" + self.mOutName
      self.mTrendFrame = pd.DataFrame()
      self.mTimeInfo.addVars(self.mTrendFrame)
  
imports: import pandas
  import numpy
  from .None import Time
  from .None import Perf
  from .None import Plots
  from .None import Utils
  import sklearn
  import sklearn.preprocessing
  import sklearn.linear_model
  from sklearn.feature_selection import RFE
  from sklearn.linear_model import LinearRegression
label_desc: Use image node_id 2 for calling the cMovingMedianTrend obj's underlying member method code with example usage: obj.addTrendInputVariables() without return types