Extending D's support for object-oriented design with private(this)

[NotYouAgain]

On Thursday, 25 April 2024 at 13:35:29 UTC, Nick Treleaven wrote:
> It should say whether __traits(getMember), allMembers and 
> .tupleof can access private(this) members.
> ..
> ...

This unittest would pass:

module m;
@safe:
import std;

     class C
     {
       private(this):
         int x;
     }

     unittest
     {
         auto c = new C;

         static assert(__traits(getVisibility, C.x) == 
"private(this)");
         static assert(__traits(hasMember, C, "x") == true);
     }