title: How to setup filtered access to youtube
body: <p>Recently my app was rejected with cause: "The rating you have selected, 4+, is inconsistent with the content of your app. Since your app allows unfiltered access to YouTube, where content with mature or suggestive themes can be accessed, it should be rated 17+."</p>
  
  <p>There are links from my app to youtube videos. I know some apps have links on youtube videos, but their rating less than 17+. I think there is way to tune filtered access, maybe by means of optional parameters in URL string, but I didn't find this in google api docs.</p>
  
  <p>Do you know how it can be done?</p>