code: def testTypeCorrectness(self):
      assert isinstance(test_util.test_seed_stream(), SeedStream)
      assert isinstance(
          test_util.test_seed_stream(hardcoded_seed=7), SeedStream
      )
      assert isinstance(
          test_util.test_seed_stream(salt="foo"), SeedStream
      )
  
imports: import collections
  from absl import flags
  from absl.testing import flagsaver
  from absl.testing import parameterized
  import numpy
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.internal import dtype_util
  from tensorflow_probability.python.internal import test_combinations
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.util.seed_stream import SeedStream
label_desc: Use image node_id 1 for calling the SeedSettingTest obj's underlying member method code with example usage: obj.testTypeCorrectness() without return types