LLVM now has another way to implement RTTI using the `CastInfo` trait instead of `classof`: https://llvm.org/doxygen/structllvm_1_1CastInfo.html https://llvm.or

LLVM now has another way to implement RTTI using the `CastInfo` trait instead of `classof`: https://llvm.org/doxygen/structllvm_1_1CastInfo.html https://llvm.org/doxygen/structllvm_1_1CastInfo.html But it's really just an implementation difference, the idea is still to have a lightweight RTTI.