question: public void dispose ( ) { if ( pingLabelsMap != null ) { pingLabelsMap . clear ( ) ; pingLabelsMap = null ; } if ( itemsManaged != null ) { itemsManaged . clear ( ) ; itemsManaged = null ; } if ( folders != null ) { folders = null ; } if ( sashes != null ) { sashes = null ; } }
target:  Disposes all the resources that will not be cleaned up when this window is closed.