@Override public boolean containsAll(final Collection<?> c) { synchronized (sync) { return collection.containsAll(c); } } @Override
@Override public boolean containsAll(Collection<?> c) { return collection.containsAll(c); } @Override
@Override public boolean containsAll(final IntCollection c) { synchronized (sync) { return collection.containsAll(c); } } @Override
@Override public boolean containsAll(IntCollection c) { return collection.containsAll(c); } @Override