src/java.base/share/classes/java/lang/StackFramePermission.java

@@ -27,10 +27,11 @@
 /**
  * Permission to access {@link StackWalker.StackFrame}.
  *
  * @see java.lang.StackWalker.Option#RETAIN_CLASS_REFERENCE
  * @see StackWalker.StackFrame#getDeclaringClass()
+ * @since 9
  */
 public class StackFramePermission extends java.security.BasicPermission {
     private static final long serialVersionUID = 2841894854386706014L;
 
     /**