Detect VelopackApp.Run() in any method in main module

test/TestApp/Program.cs

@@ -7,6 +7,10 @@ try {
     bool shouldExit = false;
     bool shouldAutoUpdate = args.Any(a => a.Equals("--autoupdate", StringComparison.OrdinalIgnoreCase));
 
+#if USE_ASYNC_MAIN
+    await Task.Delay(10).ConfigureAwait(false);
+#endif
+
 #if !NO_VELO_BUILDER
     VelopackApp.Build()
         .SetAutoApplyOnStartup(shouldAutoUpdate)

test/TestApp/TestApp.csproj

@@ -10,6 +10,10 @@
     <DefineConstants>NO_VELO_BUILDER</DefineConstants>
   </PropertyGroup>
 
+  <PropertyGroup Condition=" $(UseAsyncMain) != '' ">
+    <DefineConstants>USE_ASYNC_MAIN</DefineConstants>
+  </PropertyGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\src\Velopack\Velopack.csproj" />
   </ItemGroup>