{"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"//"}]}
        // visualization in <https://ui.perfetto.dev> easier to interpret. It is set to a value of
        // to put the "frame" span on a separate trace thread/line than other spans, to make the
        // [tracing::field::Empty] so that other tracing layers (e.g. the logger) will ignore it.