assets/samples/Samples/AppearanceAssetEditing/CS/AppearanceAssetEditing.csproj

<Project Sdk="">
  <PropertyGroup>
    <RootNamespace>Revit.SDK.Samples.AppearanceAssetEditing.CS</RootNamespace>
  </PropertyGroup>
  <Import Project="$(SolutionDir)VSProps\SDKSamples.props" />
  <Import Project="$(SolutionDir)VSProps\SDKSamples.targets" />
  <PropertyGroup>
    <PostBuildEvent>set FILEFORSAMPLEREG="$(SolutionDir)..\..\..\..\Regression\API\SDKSamples\UpdateSampleDllForRegression.py"
if exist %25FILEFORSAMPLEREG%25 py -3 %25FILEFORSAMPLEREG%25  "$(ProjectPath)" "$(TargetPath)" "$(SolutionDir)"</PostBuildEvent>
  </PropertyGroup>
</Project>