code: def testHyp2F1ParamsSmallZSmallCSmaller(self, dtype, rtol):
      # Ensure that |c| < |b|.
      seed_stream = test_util.test_seed_stream()
      a = self.GenParam(0.5, 1.0, dtype, seed_stream())
      b = self.GenParam(0.5, 1.0, dtype, seed_stream())
      c = self.GenParam(0.0, 0.5, dtype, seed_stream())
      self.VerifyHyp2F1(dtype, rtol, a, b, c)
  
imports: import functools
  from absl.testing import parameterized
  import mpmath
  import numpy
  from scipy import special
  import tensorflow.compat.v2
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.math import hypergeometric
label_desc: Use image node_id 9 for calling the Hyp2F1Test obj's underlying member method code with example usage: obj.testHyp2F1ParamsSmallZSmallCSmaller(dtype, rtol) without return types