{"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"//"}]}
        // We lack the database here ...
        write!(f, "<write_variant_name unsupported>")
        // let variant = ty.as_adt().and_then(|(adt, _)| Self::variant_id_for_adt(db, ctor, adt));