{"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"|"}]}
            | RegionNameSource::AnonRegionFromAsyncFn(span)
            | RegionNameSource::AnonRegionFromYieldTy(span, _)
            | RegionNameSource::AnonRegionFromImplSignature(span, _) => Some(span),