Avalonia/samples/IntegrationTestApp/IntegrationTestApp.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <Nullable>enable</Nullable>
  </PropertyGroup>
  <Import Project="..\..\build\BuildTargets.targets" />
  <Import Project="..\..\build\SampleApp.props" />
  <Import Project="..\..\build\ReferenceCoreLibraries.props" />
</Project>