$(OptionalToolSource) $(OptionalToolSourceUser) $(OptionalToolSourcePassword) $(ToolsDir)optional-tool-runtime $(OptionalToolingDir)\optional.json $(OptionalToolingDir)\project.json $(OptionalToolingDir)\project.lock.json $(OptionalToolingDir)\project.assets.json $(BaseIntermediateOutputPath)generatedNuGetConfig/ $(GeneratedNuGetConfigDir)optional.NuGet.Config $(OptionalToolingProjectLockJsonPath) $(OptionalToolingProjectAssetsJsonPath)