public class PurchaseOrderType
    implements ToString //, ...

    // ...    

    public String toString() {
        final ToStringStrategy strategy = JAXBToStringStrategy.INSTANCE;
        final StringBuilder buffer = new StringBuilder();
        append(null, buffer, strategy);
        return buffer.toString();
    }

    public StringBuilder append(ObjectLocator locator, StringBuilder buffer, ToStringStrategy strategy) {
        strategy.appendStart(locator, this, buffer);
        appendFields(locator, buffer, strategy);
        strategy.appendEnd(locator, this, buffer);
        return buffer;
    }

    public StringBuilder appendFields(ObjectLocator locator, StringBuilder buffer, ToStringStrategy strategy) {
        {
            USAddress theShipTo;
            theShipTo = this.getShipTo();
            strategy.appendField(locator, this, "shipTo", buffer, theShipTo);
        }
        {
            USAddress theBillTo;
            theBillTo = this.getBillTo();
            strategy.appendField(locator, this, "billTo", buffer, theBillTo);
        }
        // ...
        return buffer;
    }


    // ...
}

-XtoString-toStringStrategyClass=com.acme.foo.CustomToStringStrategy