Rafal Mzyk

#### Bug description Analyzer is reporting diagnostic when return type is: - `Task` - `Task?` - `Task` - `Task?` - `ValueTask` Analyzer is not reporting diagnostic when used with: -...

### Input code public class Test : Test { } public class Test : IList { public T this[int index] { get => throw new NotImplementedException(); set => throw new...

[API Proposal]: Introduce new memory cache library

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### Background and motivation We have two available memory cache libraries in .NET that are popular and well known - `System.Runtime.Caching` and `Microsoft.Extensions.Memory.Cache`. As already described in [this issue](https://github.com/dotnet/runtime/issues/48567) there...