question: static protected void expandElement ( Element el , List < Element > list ) { list . addAll ( el . getChildren ( "display" ) ) ; List < Element > children = el . getChildren ( ) ; for ( int i = 0 ; i < children . size ( ) ; i ++ ) { expandElement ( children . get ( i ) , list ) ; } }
target:  Find all of the display elements descending from this element