# Named variadic in a foreign function declaration

extern "C" { fn print(format: *const u8, args: ...); }

==>

SourceFile(
  ForeignModItem(
    extern,
    String,
    DeclarationList(
      FunctionItem(
        fn,
        BoundIdentifier,
        ParamList(
          Parameter(BoundIdentifier, PointerType(const, TypeIdentifier)),
          Parameter(BoundIdentifier))))))

# Named variadic in a bare function pointer

type Callback = unsafe extern "C" fn(*const u8, _: ...);

==>

SourceFile(
  TypeItem(
    type,
    TypeIdentifier,
    FunctionType(
      unsafe,
      extern,
      String,
      fn,
      ParamList(
        Parameter(PointerType(const, TypeIdentifier)),
        Parameter(_)))))