Add comment to Java 8 package list
diff --git a/src/main/java/org/codehaus/groovy/vmplugin/v9/Java9.java b/src/main/java/org/codehaus/groovy/vmplugin/v9/Java9.java
index 757ec77..e635157 100644
--- a/src/main/java/org/codehaus/groovy/vmplugin/v9/Java9.java
+++ b/src/main/java/org/codehaus/groovy/vmplugin/v9/Java9.java
@@ -469,6 +469,7 @@
     }
 
     private static String[] JAVA8_PACKAGES() {
+        // The following package list should NOT be changed!
         return new String[] {
                 "apple.applescript",
                 "apple.laf",