get parameter names

[EntangledQuanta via Digitalmars-d-learn]

template(A, B...)
{
   auto foo(C...)(C c)
   {
       ... get c's parameter names, should be alpha, beta
   }
}

foo!(., .)(alpha, beta)

I need the actual identifiers passed to foo. I can get the 
types(obviously C) but when I try to get the identifier 
names(__traits(identifier or other methods) I stuff get _param_k 
or errors.

I need both C's types and the parameter identifier names past, 
else I'd just pass as strings.