Method createKeySet

output/java_guava/1.4.19/Maps.java:2819–2822

()

    }

    @Override
    Set<K> createKeySet() {
      return Sets.filter(unfiltered.keySet(), keyPredicate);
    }

    // The cast is called only when the key is in the unfiltered map, implying
    // that key is a K.