code: def testPdfTwoBatches(self):
      a = [1.0, 2]
      b = [1.0, 2]
      x = [0.5, 0.5]
      dist = beta.Beta(a, b, validate_args=True)
      pdf = dist.prob(x)
      self.assertAllClose([1.0, 3.0 / 2], self.evaluate(pdf))
      self.assertEqual((2,), pdf.shape)
  
imports: from absl.testing import parameterized
  import numpy
  from scipy import special
  from scipy import stats
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import beta
  from tensorflow_probability.python.distributions import kullback_leibler
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.math import gradient
label_desc: Use image node_id 7 for calling the BetaTest obj's underlying member method code with example usage: obj.testPdfTwoBatches() without return types