192     std::optional<size_t> firstUidInChainIndex = mValues.size();  in parseAttributionChain()  local
210     if (mValues.size() > (firstUidInChainIndex.value() + 1)) {  in parseAttributionChain()
212         mAttributionChainStartIndex = firstUidInChainIndex;  in parseAttributionChain()
215         firstUidInChainIndex = std::nullopt;  in parseAttributionChain()
220         parseAnnotations(numAnnotations, /*numElements*/ std::nullopt, firstUidInChainIndex);  in parseAttributionChain()
315                                            std::optional<size_t> firstUidInChainIndex) {  in parsePrimaryFieldAnnotation()  argument
317     if (mValues.empty() || annotationType != BOOL_TYPE || firstUidInChainIndex || numElements) {  in parsePrimaryFieldAnnotation()
328                                                    std::optional<size_t> firstUidInChainIndex) {  in parsePrimaryFieldFirstUidAnnotation()  argument
330     if (mValues.empty() || annotationType != BOOL_TYPE || !firstUidInChainIndex) {  in parsePrimaryFieldFirstUidAnnotation()
336     if (mValues.size() < firstUidInChainIndex.value() + 1) {  // AttributionChain is empty.  in parsePrimaryFieldFirstUidAnnotation()
344     mValues[firstUidInChainIndex.value()].mAnnotations.setPrimaryField(primaryField);  in parsePrimaryFieldFirstUidAnnotation()
427                                 std::optional<size_t> firstUidInChainIndex) {  in parseAnnotations()  argument
440                 parsePrimaryFieldAnnotation(annotationType, numElements, firstUidInChainIndex);  in parseAnnotations()
443                 parsePrimaryFieldFirstUidAnnotation(annotationType, firstUidInChainIndex);  in parseAnnotations()