Selling Partner APIs - x-amzn-RateLimit-Limit Response Header


#1

The documentation speaks about the response header x-amzn-RateLimit-Limit being present for use:
selling-partner-api-docs/Usage-Plans-and-Rate-Limits.md at main · amzn/selling-partner-api-docs (github.com)
However, I have never seen this header actually show up in neither valid nor throttled responses.

Is this header implemented and, if so, when/where should we expect to see it?

System information:
C# Core 3.1 + RestSharp
Calling Orders/GetOrder (or any of the Orders APIs)
Example request/response info:
x-amzn-RequestId=820a78ac-b1d0-4e2c-b6a1-a9dfc4af9a65
Date=Wed, 07 Apr 2021 19:09:44 GMT
X-Amzn-Trace-Id=Root=1-606e0378-1713d3d907f8a3157e03bf75