{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"Some(ExpnKind::Desugaring(DesugaringKind::Await))"}]}
            Some(ExpnKind::Desugaring(DesugaringKind::Await)) => {
            // Retain only the first await-related or macro-expanded covspan with this span.
                deduplicated_spans.insert(covspan.span)