@Callback
 @BindSelector("setLeftBarButtonItem:animated:")
 public static void setLeftBarButtonItem(
     UINavigationItem __self__, Selector __cmd__, UIBarButtonItem item, boolean animated) {
   __self__.setLeftBarButtonItem(item, animated);
 }
 @Callback
 @BindSelector("setLeftBarButtonItem:")
 public static void setLeftBarButtonItem(
     UINavigationItem __self__, Selector __cmd__, UIBarButtonItem leftBarButtonItem) {
   __self__.setLeftBarButtonItem(leftBarButtonItem);
 }