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

*** 172,177 ****
--- 172,182 ----
  
      /**
       * Invokes Long.fastUUID
       */
      String fastUUID(long lsb, long msb);
+ 
+     /**
+      * Invalidate package access cache
+      */
+     void invalidatePackageAccessCache();
  }