@Override
    public final String toRankingExpression() {
        StringBuilder b = new StringBuilder("if (");
        b.append(getLeftValue());
        b.append(" ");
        b.append(conditionToRankingExpression());
        b.append(", ");
        b.append(getParent().getNodes().get(getTrueLabel()).toRankingExpression());
        b.append(", ");
        b.append(getParent().getNodes().get(getFalseLabel()).toRankingExpression());
        b.append(")");
        return b.toString();
    }
Return the label to jump to if this condition is false.
searchlib/src/main/java/com/yahoo/searchlib/treenet/rule/Condition.java