add DataEngine::pluginInfo()

src/plasma/dataengine.cpp

@@ -87,6 +87,11 @@ Service *DataEngine::serviceForSource(const QString &source)
     return new NullService(source, this);
 }
 
+KPluginInfo DataEngine::pluginInfo() const
+{
+    return d->dataEngineDescription;
+}
+
 void DataEngine::connectSource(const QString &source, QObject *visualization,
                                uint pollingInterval,
                                Plasma::IntervalAlignment intervalAlignment) const

src/plasma/dataengine.h

@@ -106,6 +106,11 @@ class PLASMA_EXPORT DataEngine : public QObject
          */
         Q_INVOKABLE virtual Service *serviceForSource(const QString &source);
 
+        /**
+         * @return description of the plugin that implements this DataEngine
+         */
+        KPluginInfo pluginInfo() const;
+
         /**
          * Returns the engine name for the DataEngine
          */