简单的 ProjectReference
<ItemGroup>
<ProjectReference Include="Foo.csproj">
<Project>{01234567-0123-0123-0123-0123456789AB}</Project>
<Name>Foo</Name>
</ProjectReference>
</ItemGroup>
<ItemGroup>
<ProjectReference Include="Foo.csproj">
<Project>{01234567-0123-0123-0123-0123456789AB}</Project>
<Name>Foo</Name>
</ProjectReference>
</ItemGroup>