What's the name for a class that simply contains mixins?

Question

Is there a name for a class that simply acts as a holder for mixins?

A simple example in C++ would look like this:

template<typename... Mixins>
class WhatsMyName : Mixins... {
};

WhatsMyName doesn't have any functionality of its own, and is just a proxy for the mixins that it contains.

Container and Holder seem too generic, MixingBowl is too cute, and Cone is too obscure. I'm stumped!

Answer 1

It's a Case, or Armor. Or if you want to be cute, a Katamari.