LV2 specific calls, saving/restore as string.

modules/juce_audio_processors/processors/juce_AudioProcessor.h

@@ -1246,6 +1246,11 @@ public:
     /** This method is called when the layout of the audio processor changes. */
     virtual void processorLayoutsChanged();
 
+    //==============================================================================
+    /** LV2 specific calls, saving/restore as string. */
+    virtual String getStateInformationString () { return String::empty; }
+    virtual void setStateInformationString (const String&) {}
+
     //==============================================================================
     /** Adds a listener that will be called when an aspect of this processor changes. */
     virtual void addListener (AudioProcessorListener* newListener);