//
    // - Cache it, and annotate the field with @LazyInit.
    // - Simplify the code below, and consider eliminating the field (b/287198172), which is also
    //   set by one of the constructors.
    ImmutableSortedMap<K, V> result = descendingMap;
    if (result == null) {
      if (isEmpty()) {
        return emptyMap(Ordering.from(comparator()).reverse());
      } else {

*  `tf.experimental.strict_mode`
    * Added a new API, `strict_mode`, which converts all deprecation warnings into runtime errors with instructions on switching to a recommended  substitute.

*   TensorFlow Debugger (tfdbg) CLI: ncurses-based CLI for tfdbg v1 was removed.

### Docs

* 📝 Update Uvicorn installation instructions to use uvicorn[standard] (includes uvloop). PR [#2543](https://github.com/tiangolo/fastapi/pull/2543) by [@tiangolo](https://github.com/tiangolo).