Member predicate UsingDeclarationEntry::getReferencedMember
Gets the member that is referenced by this using declaration, where the member depends on a type template parameter.
For example:
template <typename T>
class A {
using T::m;
};
Here, getReferencedMember() yields the member m of T. Observe that,
as T is not instantiated, m is represented by a Literal and not
a Declaration.