Fix for `CS8179: Predefined type 'System.ValueTuple`2' is not defined or imported` in Razor files

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Fix for CS8179: Predefined type 'System.ValueTuple2' is not defined or imported` in Razor cshtml files.

Copy to %LOCALAPPDATA%\Microsoft\MSBuild\15.0\Microsoft.Common.targets\ImportAfter\

NET47ValueTupleFix.props

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
	<!-- 
	Copy to %LOCALAPPDATA%\Microsoft\MSBuild\15.0\Microsoft.Common.targets\ImportAfter\
	-->
	<PropertyGroup>
		<!-- If we have .NET 4.7 use ValueTuple defined in mscorlib -->
		<DotNet47Installed Condition=" '$([MSBuild]::GetRegistryValueFromView(`HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319\SKUs\.NETFramework,Version=v4.7`, null, `NOT_FOUND`, RegistryView.Registry64))' == '' ">True</DotNet47Installed>
		<TargetFrameworkVersion Condition="$(TargetFrameworkVersion) == '4.6' And '$(DotNet47Installed)' == 'True'">v4.7</TargetFrameworkVersion>
	</PropertyGroup>
	
	<ItemGroup>
		<Reference Condition="'$(DotNet47Installed)' == 'True'" Remove="System.ValueTuple, Version=4.0.1.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL" />
		
		<Reference Condition=" '$(DotNet47Installed)' == 'True' " Include="mscorlib">
			<HintPath>$(WINDIR)\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll</HintPath>
		</Reference>
		
	</ItemGroup>
</Project>

What's this for? I encounter the problem in mvc project, although I have installed System.ValueTuple through nuget.