<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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    <TargetFrameworkVersion Condition="'$(VisualStudioVersion)' == '15.0'">v4.6.1</TargetFrameworkVersion>
    <TargetFrameworkVersion Condition="'$(VisualStudioVersion)' == '14.0'">v4.5</TargetFrameworkVersion>
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</Project>