code: def test_ppf(self):
      n, p = zinegbin.convert_params(5, 1, 1)
      nbinom_ppf = nbinom.ppf(0.71, n, p)
      zinbinom_ppf = zinegbin.ppf(0.71, 5, 1, 1, 0)
      assert_allclose(nbinom_ppf, zinbinom_ppf, rtol=1e-12, atol=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 10 for calling the TestZiNBP obj's underlying member method code with example usage: obj.test_ppf() without return types