/guava/guava/src/com/google/common/collect/ArrayTable.java
return keyIndex.keySet ( ) ;
private final ImmutableMap<K, Integer> keyIndex; private ArrayMap(ImmutableMap<K, Integer> keyIndex) { this.keyIndex = keyIndex; } @Override public Set<K> keySet() { <extra_id_0> } K getKey(int index) { return keyIndex.keySet().asList().get(index); } abstract String getKeyRole(); @ParametricNullness