public static async Task InitializeAsync(AsyncPackage package)
{
// Switch to the main thread - the call to AddCommand in Command1's constructor requires
// the UI thread.
await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync(package.DisposalToken);
var dte = await package.GetServiceAsync(typeof(DTE)) as DTE2;
OleMenuCommandService commandService = await package.GetServiceAsync(typeof(IMenuCommandService)) as OleMenuCommandService;
Instance = new GenerateAttribute(package, commandService, dte);
}