message: Deprecate tf.test.is_gpu_available
  The tf.config.experimental.list_physical_devices API is preferable as
  the current API results in an initialization of the runtime which may be
  undesirable.
diff: @@ -1433,6 +1433,8 @@ def with_forward_compatibility_horizons(*horizons):
  return decorator
  +@deprecation.deprecated(
  + None, "Use `tf.config.experimental.list_physical_devices('GPU')` instead.")
  @tf_export("test.is_gpu_available")
  def is_gpu_available(cuda_only=False, min_cuda_compute_capability=None):
  """Returns whether TensorFlow can access a GPU.
  