code: def param_names(self):
      return [
          "intercept",
          "var.e",
          "var.x.coeff",
          "var.w.coeff",
          "rho1",
          "rho2",
      ]
  
imports: from collections import OrderedDict
  import matplotlib.pyplot
  import numpy
  import pandas
  import statsmodels.api
  import pymc3
  import theano
  import theano.tensor
label_desc: Use image node_id 2 for calling the TVRegressionExtended obj's underlying member method code with example usage: obj.param_names() and returns: list