question: protected void garbageCollect ( VisualTable labels ) { Iterator iter = labels . tuples ( ) ; while ( iter . hasNext ( ) ) { VisualItem item = ( VisualItem ) iter . next ( ) ; if ( ! item . isStartVisible ( ) && ! item . isEndVisible ( ) ) { labels . removeTuple ( item ) ; } } }
target:  Remove axis labels no longer being used.