D modeling

[Jesse Phillips]

On Wednesday, 3 July 2019 at 14:01:17 UTC, Jesse Phillips wrote:
> On Wednesday, 3 July 2019 at 13:34:38 UTC, Bert wrote:
>> Interfaces are required because D does not support MI of 
>> classes. You will not be able to substitute one model for the 
>> other without inheritance. It's required.
>
> All I did was remove the interfaces:
>
> https://run.dlang.io/gist/3b14d69aa323d83e2736a0e2e0dece3f

Now I remove your unneeded overrides:

https://run.dlang.io/gist/28168b9e1265ab05da310c527079f6ac