to:
                      description: Optional.
                      items:
                        properties:
                          operation:
                            description: Operation specifies the operation of a request.
                            properties:
                              hosts:
                                description: Optional.

                    to:
                      description: Optional.
                      items:
                        properties:
                          operation:
                            description: Operation specifies the operation of a request.
                            properties:
                              hosts:
                                description: Optional.

        operation is a scalar.
    *   Fix `NNAPI` delegate failure when Axis input for reduce operation is a
        scalar.
    *   Expose option to limit the number of partitions that will be delegated
        to `NNAPI`.
    *   If a target accelerator is specified, use its feature level to determine
        operations to delegate instead of SDK version.
*   `tf.random`:

### Storage capacity tracking