{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"hir::ExprKind::Block(hir::Block"}]}
            hir::ExprKind::Block(hir::Block { stmts: [], expr: Some(expr), .. }, _) => {
            hir::ExprKind::Tup([]) => Simple,
                if classify(expr) == Complex { Complex } else { Simple }