ImplWitness[Table]
Add a `CppWitness` and use it instead of using `ImplWitness` with an `ImplId` and `SpecificId` of `None`. This witness can be substantially simpler because we never need a `SpecificId`.
ref
addr
Optional(T*)
T*
import Cpp;
Cpp
CppCompat
import Cpp inline "some code";
CppCompat.ULong32
CppCompat.LongLong64
CppCompat.ULongLong64
intN_t
uintN_t
none.carbon
CppVoidType