src/java.base/share/classes/java/lang/invoke/StringConcatFactory.java

@@ -94,10 +94,12 @@
  * to reserve a few empty slots on the parameter lists to to capture the
  * temporal results. This is why bootstrap methods in this factory do not accept
  * more than 200 argument slots. Users requiring more than 200 argument slots in
  * concatenation are expected to split the large concatenation in smaller
  * expressions.
+ *
+ * @since 9
  */
 public final class StringConcatFactory {
 
     /**
      * Tag used to demarcate an ordinary argument.