/guava/guava/src/com/google/common/collect/Maps.java
this.fromMap = checkNotNull( fromMap) ;this.unfiltered = checkNotNull( unfiltered) ;
this.unfiltered = checkNotNull ( unfiltered ) ;
extends AbstractNavigableMap<K, V> { private final NavigableMap<K, V> unfiltered; private final Predicate<? super Entry<K, V>> entryPredicate; private final Map<K, V> filteredDelegate; FilteredEntryNavigableMap( NavigableMap<K, V> unfiltered, Predicate<? super Entry<K, V>> entryPredicate) { <extra_id_0> this.entryPredicate = entryPredicate; this.filteredDelegate = new FilteredEntryMap<>(unfiltered, entryPredicate); } @Override @CheckForNull public Comparator<? super K> comparator() {