How to get type qualifiers of D-style variadic parameter

[IchorDev via Digitalmars-d-learn]

If I have a type qualifier on a D-style variadic parameter, like 
so:
```d
void fnA(const ...){}
void fnB(immutable ...){}
void fnC(shared ...){}
```
... then how do I get that type qualifier using compile-time 
reflection?
Ideally I need to be able to do this on function/function 
pointer/delegate TYPES, not just the actual function symbols.