code: public static <K, V> SortedMap<K, V> filterEntries(
        SortedMap<K, V> unfiltered,
        Predicate<? super Entry<K, V>> entryPredicate) {
      return Platform.mapsFilterSortedMap(unfiltered, entryPredicate);
    }
docs: Returns a sorted map containing the mappings in {@code unfiltered} that
  satisfy a predicate. The returned map is a live view of {@code unfiltered};
  changes to one affect the other.
  
  <p>The resulting map's {@code keySet()}, {@code entrySet()}, and {@code
  values()} views have iterators that don't support {@code remove()}, but all
  other methods are supported by the map and its views. When given a
  key/value pair that doesn't satisfy the predicate, the map's {@code put()}
  and {@code putAll()} methods throw an {@link IllegalArgumentException}.
  Similarly, the map's entries have a {@link Entry#setValue} method that
  throws an {@link IllegalArgumentException} when the existing key and the
  provided value don't satisfy the predicate.
  
  <p>When methods such as {@code removeAll()} and {@code clear()} are called
  on the filtered map or its views, only mappings that satisfy the filter
  will be removed from the underlying map.
  
  <p>The returned map isn't threadsafe or serializable, even if {@code
  unfiltered} is.
  
  <p>Many of the filtered map's methods, such as {@code size()},
  iterate across every key/value mapping in the underlying map and determine
  which satisfy the filter. When a live view is <i>not</i> needed, it may be
  faster to copy the filtered map and use the copy.
  
  <p><b>Warning:</b> {@code entryPredicate} must be <i>consistent with
  equals</i>, as documented at {@link Predicate#apply}.
  
  @since 11.0