class_docstr: Cache tests for single-part bijectors.
code: def setUp(self):
      if not tf.executing_eagerly():
          self.skipTest("Not interesting in graph mode.")
      super(SinglePartCacheTest, self).setUp()
  
imports: from absl.testing import parameterized
  import tensorflow.compat.v2
  from tensorflow_probability.python.internal import cache_util
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 1 for calling the SinglePartCacheTest obj's underlying member method code with example usage: obj.setUp() without return types