{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"(next_expr.span.shrink_to_lo(),"}]}
                    (next_expr.span.shrink_to_lo(), "    ".to_string()),
                    ),
                    (next_expr.span.shrink_to_hi(), format!("\n{}}}", " ".repeat(margin))),