ApiCallDetails says Success = true, but there are items with errors

[snakefoot]

Have this BytesResponse from a bulk-operation, where Success = true:

Successful (200) low level call on POST: /_bulk
{
"took":0,
"errors":true,
"items":[{"index":{"_index":"logstash-2021.07.12","_type":"_doc","_id":"OTgmmnoBq3Eup03vE24t","status":403,"error":{"type":"security_exception","reason":"action [indices:data/write/bulk[s]] is unauthorized for API key id [NzgjmnoBq3Eup03vg25H] of user [elastic] on indices [logstash-2021.07.12], this action is granted by the index privileges [create_doc,create,delete,index,write,all]"}

Right now ApiCallDetails has these fields, when none of them tells that something failed:

Success = success,
OriginalException = exception,
HttpStatusCode = statusCode,
RequestBodyInBytes = requestData.PostData?.WrittenBytes,
Uri = requestData.Uri,
HttpMethod = requestData.Method,
DeprecationWarnings = warnings ?? Enumerable.Empty<string>(),
ResponseMimeType = mimeType,
ConnectionConfiguration = requestData.ConnectionSettings

Would like something similar to DeprecationWarnings, but where the HttpHeader signals one (or more) items failed:

responseMessage.Headers.TryGetValues("Warning", out warnings);

Maybe also use the "Warning"-part to also signal that "One ore more items with errors", when no other "deprecated warnings".

Then one can react on DeprecationWarnings being non-empty and then deserialize the entire response, to reveal the actual issue(s).