code: def test_logpmf_zero(self):
      gp_logpmf = genpoisson_p.logpmf(7, 3, 1, 1)
      zigp_logpmf = zigenpoisson.logpmf(7, 3, 1, 1, 0)
      assert_allclose(gp_logpmf, zigp_logpmf, rtol=1e-12)
  
imports: import numpy
  from numpy.testing import assert_allclose, assert_equal
  from scipy import stats
  from scipy.stats import poisson, nbinom
  from statsmodels.tools.tools import Bunch
  from statsmodels.distributions.discrete import genpoisson_p, truncatedpoisson, truncatednegbin, zipoisson, zinegbin, zigenpoisson, DiscretizedCount, DiscretizedModel
label_desc: Use image node_id 2 for calling the TestZIGeneralizedPoisson obj's underlying member method code with example usage: obj.test_logpmf_zero() without return types