void function ( ) { this . itemsetsCount -- ; }
decrease the count of itemsets stored in this structure by 1 . concode_field_sep String name concode_elem_sep List<List<Itemset>> levels concode_elem_sep int itemsetsCount concode_field_sep int getItemsetsCount concode_elem_sep void setName concode_elem_sep void printItemsets concode_elem_sep List<List<Itemset>> getLevels concode_elem_sep void addItemset