# Named and unnamed function pointer parameters

type Named = fn(value: i32);
type Unnamed = fn(_: i32);

==>

SourceFile(
  TypeItem(
    type,
    TypeIdentifier,
    FunctionType(fn, ParamList(Parameter(BoundIdentifier, TypeIdentifier)))),
  TypeItem(
    type,
    TypeIdentifier,
    FunctionType(fn, ParamList(Parameter(_, TypeIdentifier)))))