The type or namespace name 'HttpMethod' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpRequestMessage' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'ByteArrayContent' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpRequestMessage' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpContent' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpResponseMessage' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpRequestMessage' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpResponseMessage' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpResponseMessage' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'HttpRequestMessage' could not be found (are you missing a using directive or an assembly reference?)

Properties should not return arrays (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1819)

Rename type name ResponseHandlerDelegate so that it does not end in 'Delegate' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1711)

Exception type System.IndexOutOfRangeException is reserved by the runtime (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca2201)

In virtual/interface member IResponseBehavior.HandleAsync(MockHttpRequestContext, HttpResponseMessage, ResponseHandlerDelegate, CancellationToken), rename parameter next so that it no longer conflicts with the reserved language keyword 'Next'. Using a reserved keyword as the name of a parameter on a virtual/interface member makes it harder for consumers in other languages to override/implement the member. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1716)

Consider calling ConfigureAwait on the awaited task (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca2007)

Modify 'TryAdd' to catch a more specific allowed exception type, or rethrow the exception (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1031)

Change type of field 'HeadersWithSingleValueOnly' from 'System.Collections.Generic.ISet<string>' to 'System.Collections.Generic.HashSet<string>' for improved performance (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1859)

Prefer 'static readonly' fields over constant array arguments if the called method is called repeatedly and is not mutating the passed array (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1861)

Prefer 'static readonly' fields over constant array arguments if the called method is called repeatedly and is not mutating the passed array (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1861)