{"ast_node_type":"function","tokens":[{"end":93,"kind":"keyword","start":0,"text":"fn"}]}
    fn lower_ty_only_param(&mut self, type_ref_id: TypeRefId) -> Option<TypeOrConstParamId> {
    /// So we just check here if the `type_ref` resolves to a generic param, and which.
        let type_ref = &self.store[type_ref_id];