sb.add("content", mContent);
    ZSoapSB toString(ZSoapSB sb) {        sb.beginStruct("ZEmailAddress");        sb.add("address", mAddress);        sb.add("content", mContent);        sb.add("display", mDisplay);        sb.add("personal", mPersonal);        sb.add("type", mType);        sb.endStruct();        return sb;    }