int function ( ) { return items . size ( ) ; }
it gives the number of items that compose the itemset concode_field_sep List<Item> items concode_elem_sep long timestamp concode_field_sep void addItem concode_elem_sep void addItem concode_elem_sep boolean removeItem concode_elem_sep Item removeItem concode_elem_sep List<Item> getItems concode_elem_sep Itemset cloneItemset concode_elem_sep long getTimestamp concode_elem_sep Item get concode_elem_sep int linealSearch concode_elem_sep String toString concode_elem_sep int binarySearch concode_elem_sep void setTimestamp