src/java.base/share/classes/jdk/internal/misc/JavaLangAccess.java

@@ -172,6 +172,11 @@
 
     /**
      * Invokes Long.fastUUID
      */
     String fastUUID(long lsb, long msb);
+
+    /**
+     * Invalidate package access cache
+     */
+    void invalidatePackageAccessCache();
 }