regenerate cpp-qt-client example with asJsonObject method

Author: ReallyVirtual

samples/client/petstore/cpp-qt/client/PFXEnum.h

@@ -15,6 +15,7 @@
 #include <QJsonValue>
 #include <QMetaType>
 #include <QString>
+#include <QJsonObject>
 
 namespace test_namespace {
 
@@ -35,6 +36,12 @@ class PFXEnum {
     virtual QString asJson() const {
         return jstr;
     }
+    
+    virtual QJsonObject asJsonObject() const {
+        QJsonObject obj;
+        obj["value"] = jstr;
+        return obj;
+    }
 
     virtual void fromJson(QString jsonString) {
         jstr = jsonString;