--- a/src/jdk.jfr/share/classes/jdk/jfr/internal/JVM.java	Mon Nov 25 15:21:44 2019 +0000
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/JVM.java	Mon Nov 25 18:38:01 2019 +0100
@@ -203,6 +203,8 @@
      * Call to invoke event tagging and retransformation of the passed classes
      *
      * @param classes
+     *
+     * @throws IllegalStateException if wrong JVMTI phase.
      */
     public native synchronized void retransformClasses(Class<?>[] classes);