class_docstr: Tests correctness of Sigmoid with `low` and `high` parameters set.
class_docstr_tok: ["Tests","correctness","of","Sigmoid","with","`","low","`","and","`","high","`","parameters","set","."]
code: def testAssertHighGtLow(self):
      low = np.array([1.0, 1.0, 1.0], dtype=np.float32)
      high = np.array([1.0, 2.0, 3.0], dtype=np.float32)
  
      with self.assertRaisesOpError("not defined when `low` >= `high`"):
          bijector = sigmoid.Sigmoid(
              low=low, high=high, validate_args=True
          )
          self.evaluate(bijector.forward(3.0))
  
imports: from absl.testing import parameterized
  import numpy
  from scipy import special
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import bijector_test_util
  from tensorflow_probability.python.bijectors import chain
  from tensorflow_probability.python.bijectors import scale
  from tensorflow_probability.python.bijectors import shift
  from tensorflow_probability.python.bijectors import sigmoid
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 5 for calling the ShiftedScaledSigmoidBijectorTest obj's underlying member method code with example usage: obj.testAssertHighGtLow() without return types