question: public void remove ( final DLItem item ) { checkWidget ( ) ; if ( item == null ) { SWT . error ( SWT . ERROR_NULL_ARGUMENT ) ; } if ( ! items . contains ( item ) ) { SWT . error ( SWT . ERROR_INVALID_ARGUMENT ) ; } items . remove ( item ) ; redrawTables ( ) ; }
target:  Searches the receiver's list starting at the first item until an item is found that is equal to the argument, and removes that item from the list.