Possible null reference argument for parameter 'buffer' in 'Task MemoryStream.WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)'.

Possible null reference return.

Cancel synchronously blocks. Await CancelAsync instead. (https://github.com/Microsoft/vs-threading/blob/main/doc/analyzers/VSTHRD103.md)

Change the 'WriteAsync' method call to use the 'Stream.WriteAsync(ReadOnlyMemory<byte>, CancellationToken)' overload (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1835)

Use 'GeneratedRegexAttribute' to generate the regular expression implementation at compile-time. (https://learn.microsoft.com/dotnet/fundamentals/syslib-diagnostics/syslib1045)

Use 'GeneratedRegexAttribute' to generate the regular expression implementation at compile-time. (https://learn.microsoft.com/dotnet/fundamentals/syslib-diagnostics/syslib1045)

Possible null reference argument for parameter 'buffer' in 'Task MemoryStream.WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)'.

Possible null reference return.

Change the 'WriteAsync' method call to use the 'Stream.WriteAsync(ReadOnlyMemory<byte>, CancellationToken)' overload (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1835)