Even if @ using System.Collections.Generic is used; Nor can. any() be used

[394988736]

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To Reproduce
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Expected behavior
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If you're getting an assembly not found error, you need to include a sample csproj, as there is no way to know why this occurs without seeing how you set-up your project.

Information (please complete the following information):

• OS: [ e.g Ubuntu 16.04, Windows Server 2016, etc ]
• Platform [.NET Framework 4.x / .NET Core 2.x , etc]
• RazorLight version [ e.g 2.0-beta1 ]
• Are you using the OFFICIAL RazorLight package? https://www.nuget.org/packages/razorlight
• Visual Studio version [ e.g Visual Studio Community 17.8.5 ]

Additional context
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