code: def test_beta_vect(self):
      assert_almost_equal(
          self.res1.test_beta([3.5, -0.035], [0, 1]),
          self.res2.test_joint,
          decimal=4,
      )
  
file_path: statsmodels/statsmodels/emplike/tests/test_aft.py
imports: import numpy
  from numpy.testing import assert_almost_equal
  import pytest
  from statsmodels.datasets import heart
  from statsmodels.emplike.aft_el import emplikeAFT
  from statsmodels.tools import add_constant
  from .results.el_results import AFTRes
label_desc: Use image node_id 4 for calling the Test_AFTModel obj's underlying member method code with example usage: obj.test_beta_vect() without return types