{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"BlockMarker"}]}
            BlockMarker { id } => write!(fmt, "BlockMarker({:?})", id.index()),
            SpanMarker => write!(fmt, "SpanMarker"),
            VirtualCounter { bcb } => write!(fmt, "VirtualCounter({bcb:?})"),