https://learn.microsoft.com/ja-jp/dotnet/api/system.runtime.compilerservices.callsite-1.target?view=netframework-4.8.1&viewFallbackFrom=net-10.0
CallSiteT.Target Field (System.Runtime.CompilerServices) | Microsoft Learn
The Level 0 cache - a delegate specialized based on the site history.
target fieldsystemruntimemicrosoftlearn