type: string
                            percent:
                              description: Percentage of requests on which the delay
                                will be injected (0-100).
                              format: int32
                              type: integer
                            percentage:
                              description: Percentage of requests on which the delay

                              type: string
                            percent:
                              description: Percentage of requests on which the delay
                                will be injected (0-100).
                              format: int32
                              type: integer
                            percentage:
                              description: Percentage of requests on which the delay

*   `tf.math`:

    *   Added `tf.math.approx_max_k` and `tf.math.approx_min_k` which are the
        optimized alternatives to `tf.math.top_k` on TPU. The performance
        difference ranges from 8 to 100 times depending on the size of k. When
        running on CPU and GPU, a non-optimized XLA kernel is used.

*   `tf.train`:

    *   Added `tf.train.TrackableView` which allows users to inspect the