get the size of this itemset the number of items concode_field_sep List<Integer> items concode_field_sep void addItem concode_elem_sep List<Integer> getItems concode_elem_sep Integer get concode_elem_sep Itemset cloneItemSetMinusItems concode_elem_sep boolean containsAll concode_elem_sep String toString concode_elem_sep Itemset cloneItemSet
int function ( ) { return items . size ( ) ; }