@Override public long lastIndexOf(final Object k) { return list.lastIndexOf(k); } @Override
@Override public long lastIndexOf(final Object k) { synchronized (sync) { return list.lastIndexOf(k); } } @Override
@Override public long lastIndexOf(final Object k) { return list.lastIndexOf(k); } @Override
@Override public long lastIndexOf(final Object k) { synchronized (sync) { return list.lastIndexOf(k); } } @Override