}
@Override
+ @SuppressWarnings("checkstyle:parameterName")
public final boolean add(final K e) {
throw new UnsupportedOperationException();
}
@Override
+ @SuppressWarnings("checkstyle:parameterName")
public final boolean addAll(final Collection<? extends K> c) {
throw new UnsupportedOperationException();
}
@Override
+ @SuppressWarnings("checkstyle:parameterName")
public final boolean contains(final Object o) {
return map.containsKey(o);
}