code: def testHyp2F1ParamsSmallZPositiveLargeCSmaller(self, dtype, rtol):
      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(-0.5, 0.5, dtype, seed_stream())
      self.VerifyHyp2F1(dtype, rtol, a, b, c, z_lower=0.9, z_upper=1.0)
  
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 11 for calling the Hyp2F1Test obj's underlying member method code with example usage: obj.testHyp2F1ParamsSmallZPositiveLargeCSmaller(dtype, rtol) without return types