code: def state_names(self):
      state_names = []
      for i in range(self.k_endog):
          endog_name = self.endog_names[i]
          state_names += ["intercept.%s" % endog_name]
          state_names += [
              "L1.{}->{}".format(other_name, endog_name)
              for other_name in self.endog_names
          ]
      return state_names
  
file_path: statsmodels/statsmodels/tsa/statespace/tests/test_cfa_tvpvar.py
imports: import os
  import numpy
  import pandas
  from numpy.testing import assert_allclose
  from statsmodels import datasets
  from statsmodels.tools import add_constant
  from statsmodels.tsa.tsatools import lagmat
  from statsmodels.tsa.statespace import mlemodel
label_desc: Use image node_id 2 for calling the TVPVAR obj's underlying member method code with example usage: obj.state_names() and returns: state_names