question: gets the next item in the list concode_field_sep Item<T> next concode_elem_sep Item<T> head concode_elem_sep T payload concode_elem_sep Item<T> tail concode_elem_sep Item<T> prev concode_elem_sep Pool<Item<T>> pool concode_elem_sep Item<T> iter concode_elem_sep int size concode_elem_sep Item<T> curr concode_field_sep void add concode_elem_sep void clear concode_elem_sep void iter concode_elem_sep void remove
target: T function ( ) { if ( iter == null ) return null ; T loc0 = iter . loc0 ; curr = iter ; iter = iter . next ; return loc0 ; }