this a abstract class usage

Queue - Copy\Queue\bin\Debug\Queue.exe
............\.....\...\.....\Queue.pdb
............\.....\...\.....\Queue.vshost.exe
............\.....\...\.....\Queue.vshost.exe.manifest
............\.....\GQueue.cs
............\.....\MyException.cs
............\.....\Node.cs
............\.....\obj\Debug\Queue.csproj.FileListAbsolute.txt
............\.....\...\.....\Queue.exe
............\.....\...\.....\Queue.pdb
............\.....\Program.cs
............\.....\...perties\AssemblyInfo.cs
............\.....\Queue.cs
............\.....\Queue.csproj
............\.....\Queues.cs
............\.....\Storage.cs
............\Queue.sln
............\Queue.suo
............\.....\obj\Debug\Refactor
............\.....\...\.....\TempPE
............\.....\bin\Debug
............\.....\obj\Debug
............\.....\bin
............\.....\obj
............\.....\Properties
............\Queue
Queue - Copy

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