{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"//"}]}
            // assuming `T0` to `Tn` are all syntactically valid as types.
            // A tuple pattern `(P0, .., Pn)` can be reparsed as `(T0, .., Tn)`
            PatKind::Tuple(pats) => {