{"ast_node_type":"other","tokens":[{"end":35,"kind":"keyword","start":0,"text":"SyntaxKind::BLOCK_EXPR"}]}
        SyntaxKind::BLOCK_EXPR => {
        SyntaxKind::RETURN_EXPR => ast::ReturnExpr::cast(node).and_then(|e| e.expr()),
            ast::BlockExpr::cast(node).filter(|it| it.is_standalone()).map(ast::Expr::from)