// nodes, keep_ops, init_ops. Fills in `values` and `lengths`, each of which
// must point to an array of length at least `num_values`.
//
// The elements of values will point to addresses in `storage` which must be at
// least `storage_size` bytes in length.  `num_values` and `storage` can be
// obtained from TF_GetNodesToPreserveSize
//

        (corresponding to values of `tf.data.experimental.AutoShardPolicy`).

        Static sharding (auto-sharding) requires the number of tf.data service
        workers be fixed. Users need to specify the worker addresses in
        `tensorflow.data.experimental.DispatcherConfig`.

    *   `tf.data.experimental.service.register_dataset` now accepts optional
        `compression` argument.

*   Keras:

// Get the list of strings in the value of the attribute `attr_name`.  Fills in
// `values` and `lengths`, each of which must point to an array of length at
// least `max_values`.
//
// The elements of values will point to addresses in `storage` which must be at
// least `storage_size` bytes in length.  Ideally, max_values would be set to
// TF_AttrMetadata.list_size and `storage` would be at least