Return the Pladdon that was made.

Author: tastybento

src/main/java/world/bentobox/magiccobblestonegenerator/StoneGeneratorPladdon.java

@@ -16,9 +16,14 @@
  */
 public class StoneGeneratorPladdon extends Pladdon
 {
+    private Addon addon;
+
     @Override
     public Addon getAddon()
     {
-        return new StoneGeneratorAddon();
+        if (addon == null) {
+            addon = new StoneGeneratorAddon();
+        }
+        return addon;
     }
 }