src/jdk.scripting.nashorn/share/classes/jdk/nashorn/api/tree/UnknownTreeException.java

*** 33,43 ****
   * {@linkplain TreeVisitor tree visitor} to indicate that the
   * visitor was created for a prior version of the language.
   *
   * @since 1.9
   */
- @jdk.Exported
  public class UnknownTreeException extends RuntimeException {
  
      private static final long serialVersionUID = 1L;
  
      private transient final Tree tree;
--- 33,42 ----