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The 'PackageIconUrl'/'iconUrl' element is deprecated. Consider using the 'PackageIcon'/'icon' element instead. Learn more at https://aka.ms/deprecateIconUrl [/home/runner/work/OpenActive.Server.NET/OpenActive.Server.NET/server/Fakes/OpenActive.FakeDatabase.NET/OpenActive.FakeDatabase.NET.csproj]

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread. [/home/runner/work/OpenActive.Server.NET/OpenActive.Server.NET/server/OpenActive.Server.NET/OpenActive.Server.NET.csproj]

Avoid empty interfaces [/home/runner/work/OpenActive.Server.NET/OpenActive.Server.NET/server/OpenActive.Server.NET/OpenActive.Server.NET.csproj]

Exceptions should be public [/home/runner/work/OpenActive.Server.NET/OpenActive.Server.NET/server/OpenActive.Server.NET/OpenActive.Server.NET.csproj]

Add the following constructor to SilentRollbackException: public SilentRollbackException(string message). [/home/runner/work/OpenActive.Server.NET/OpenActive.Server.NET/server/OpenActive.Server.NET/OpenActive.Server.NET.csproj]

Add the following constructor to SilentRollbackException: public SilentRollbackException(string message, Exception innerException). [/home/runner/work/OpenActive.Server.NET/OpenActive.Server.NET/server/OpenActive.Server.NET/OpenActive.Server.NET.csproj]

Call System.IDisposable.Dispose on object created by 'new SemaphoreSlim(1, 1)' before all references to it are out of scope. [/home/runner/work/OpenActive.Server.NET/OpenActive.Server.NET/server/OpenActive.Server.NET/OpenActive.Server.NET.csproj]

In externally visible method 'string IdempotencyStore.CalculateIdempotencyKey(OrderIdComponents orderId, string orderJson)', validate parameter 'orderId' is non-null before using it. If appropriate, throw an ArgumentNullException when the argument is null or add a Code Contract precondition asserting non-null argument. [/home/runner/work/OpenActive.Server.NET/OpenActive.Server.NET/server/OpenActive.Server.NET/OpenActive.Server.NET.csproj]

Member CalculateIdempotencyKey does not access instance data and can be marked as static (Shared in VisualBasic) [/home/runner/work/OpenActive.Server.NET/OpenActive.Server.NET/server/OpenActive.Server.NET/OpenActive.Server.NET.csproj]