I'm not sure what that has to do with inheritance exactly or how it pertains to this discussion. This is an implementation detail.
On Sun, Mar 12, 2017 at 3:47 AM, Michael Vostrikov < michael.vostri...@gmail.com> wrote: > 2017-03-12 12:19 GMT+05:00 Sherif Ramadan <theanomaly...@gmail.com>: > > > Which requirements are those exactly? > > > > An order should have count of products > 0 and date and address filled > before checkout procedure. >