Contentless/Test/Test.csproj

<Project Sdk="Microsoft.NET.Sdk">

    <PropertyGroup>
        <TargetFramework>net5.0</TargetFramework>
    </PropertyGroup>

    <ItemGroup>
        <PackageReference Include="MonoGame.Extended.Content.Pipeline" Version="3.8.0" />
    </ItemGroup>

    <ItemGroup>
      <None Remove="Content\Content.mgcb" />
      <MonoGameContentReference Include="Content\Content.mgcb" />
    </ItemGroup>
    
</Project>