{"ast_node_type":"variable","tokens":[{"end":61,"kind":"keyword","start":0,"text":"let"}]}
            let field_ty = match &ty_def.variants().raw[..] {
        ty::Adt(ty_def, args) => {
                [var_one, var_two] => match (&var_one.fields.raw[..], &var_two.fields.raw[..]) {