Ability to enable and get trailers collection

[budt12]

Hello, I am asking this question to understand how do I enable trailing headers(trailers) for a request.

Here's the trailers feature spec from ASP .Net core - https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.http.features.ihttpresponsetrailersfeature?view=aspnetcore-8.0

RFC7230 standard for trailers - https://datatracker.ietf.org/doc/html/rfc7230#section-4.1.2

The server should put the trailing headers on HttpRequestMessage.Trailers collection. I dont see a way to access the trailers collection or any docs about it. I would appreciate if someone can point me to the correct docs.