{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"ExprKind::Tup(v)"}]}
                                        ExprKind::Tup(v) if v.is_empty() => true,
                                        ExprKind::Block(b, None) if b.stmts.is_empty() => true,
                                        _ => false,