deferred class INT_STORE feature -- Access value: INTEGER is -- Value stored deferred --! need value_frame end feature -- Settor set_value (a_value: INTEGER) is -- Store a value in `value'. deferred ensure value_set: value = a_value --! modify set_frame end feature -- Frame Queries value_frame: MML_SET[ANY] is -- Frame of the value query. deferred end set_value_frame: MML_SET[ANY] is -- Frame of the value query. deferred end end