|  | <Project Sdk="Microsoft.NET.Sdk"> | 
|  |  | 
|  | <PropertyGroup> | 
|  | <TargetFrameworks>net451;netcoreapp1.0</TargetFrameworks> | 
|  | <AssemblyOriginatorKeyFile>../../keys/Google.Protobuf.snk</AssemblyOriginatorKeyFile> | 
|  | <SignAssembly>true</SignAssembly> | 
|  | <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign> | 
|  | <IsPackable>False</IsPackable> | 
|  | </PropertyGroup> | 
|  |  | 
|  | <ItemGroup> | 
|  | <ProjectReference Include="..\Google.Protobuf\Google.Protobuf.csproj" /> | 
|  | </ItemGroup> | 
|  |  | 
|  | <ItemGroup> | 
|  | <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" /> | 
|  | <PackageReference Include="NUnit" Version="3.9.0" /> | 
|  | <PackageReference Include="NUnit3TestAdapter" Version="3.9.0" /> | 
|  | </ItemGroup> | 
|  |  | 
|  | <!-- | 
|  | - Override target frameworks on non-Windows to just .NET Core | 
|  | - Doing this conditionally in the initial PropertyGroup confuses | 
|  | - Visual Studio. | 
|  | --> | 
|  | <PropertyGroup Condition="'$(OS)' != 'Windows_NT'"> | 
|  | <TargetFrameworks>netcoreapp1.0</TargetFrameworks> | 
|  | </PropertyGroup> | 
|  |  | 
|  | </Project> |