grpc/src/csharp/Directory.Build.targets

<Project>
  <!-- Needed for the net45 build to work on Unix. See https://github.com/dotnet/designs/pull/33 -->
  <ItemGroup>
    <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
    </PackageReference>
  </ItemGroup>
</Project>