added missing since 7.7.16 (#11418)

server/src/main/java/com/vaadin/ui/MenuBar.java

@@ -1095,7 +1095,7 @@ public class MenuBar extends AbstractComponent
      * {@link com.vaadin.client.ui.menubar.MenuBarConnector#updateFromUIDL(UIDL, ApplicationConnection)}
      * after mouseDownEvent
      *
-     * @since
+     * @since 7.7.16
      */
     public int getDelayMs() {
         return getState(false).delayMs;
@@ -1106,7 +1106,7 @@ public class MenuBar extends AbstractComponent
      * {@link com.vaadin.client.ui.menubar.MenuBarConnector#updateFromUIDL(UIDL, ApplicationConnection)}
      * after mouseDownEvent
      *
-     * @since
+     * @since 7.7.16
      */
     public void setDelayMs(int delayMs) {
         getState().delayMs = delayMs;