private async Task RenderPageCoreAsync(ITemplatePage page, PageContext context)
{
page.PageContext = context;
page.IncludeFunc = async(key, model) =>
{
ITemplatePage template = await _engine.CompileTemplateAsync(key);
await _engine.RenderIncludedTemplateAsync(template, model, model?.GetType(), context.Writer, context.ViewBag, this);
};
//_pageActivator.Activate(page, context);
await page.ExecuteAsync().ConfigureAwait(false);
}