1using System.Collections;
 2
 3namespace momoney.database.transactions
 4{
 5    public interface IKey<T>
 6    {
 7        bool is_found_in(IDictionary items);
 8        T parse_from(IDictionary items);
 9        void remove_from(IDictionary items);
10        void add_value_to(IDictionary items, T value);
11    }
12}