https://learn.microsoft.com/ru-ru/dotnet/api/system.threading.readerwriterlockslim.recursionpolicy?view=netframework-4.8.1&viewFallbackFrom=net-9.0
ReaderWriterLockSlim.RecursionPolicy Property (System.Threading) | Microsoft Learn
Gets a value that indicates the recursion policy for the current ReaderWriterLockSlim object.
property systemthreadingmicrosoftlearn