@Override
    protected void onSerialize(Serializer buf) {
        super.onSerialize(buf);
        buf.putInt(null, vector.size());
        for (Int8ResultNode node : vector) {
            node.serialize(buf);
        }
    }
This result holds nothing.

@author baldersheim
@author Simon Thoresen Hult
searchlib/src/main/java/com/yahoo/searchlib/expression/Int8ResultNodeVector.java