title: How to get list of videos from Category in YouTube Api
body: <p>I try to receive a full list of videos which are part of the preferred category and I have a problem with it. First of all I check categories doing it:</p>
  
  <pre><code>func getCategories(complishion: ([CategoriesTitle]) -&gt; Void ){
  let youTubeURLCategoriesAdress = "https://www.googleapis.com/youtube/v3/videoCategories?part=snippet&amp;regionCode=US&amp;key=\(YOUTUBE_ACCESS_KEY)"
          Alamofire.request(.GET, youTubeURLCategoriesAdress).responseJSON(completionHandler: { (response: Response&lt;AnyObject, NSError&gt;) in               
              switch response.result {
              case  .Success:
                  if let json = response.result.value{
                      if let items = json["items"]{
                          print(items)
                          guard let categories: Array&lt;CategoriesTitle&gt; = Mapper&lt;CategoriesTitle&gt;().mapArray(items) else {
                              return
                          }
                          dispatch_async(dispatch_get_main_queue(), {
                              categoriesTitles(categories)
                          })
                      }
                  }
  }
  </code></pre>
  
  <p>in this case I receive all results. One example bellow:</p>
  
  <pre><code>etag = "\"5g01s4-wS2b4VpScndqCYc5Y-8k/nqRIq97-xe5XRZTxbknKFVe5Lmg\"";
  id = 10;
  kind = "youtube#videoCategory";
  snippet =     {
      assignable = 1;
      channelId = "UCBR8-60-B28hp2BmDPdntcQ";
      title = Music;
  };
  </code></pre>
  
  <p>and then I don't know how should I send request to the YT API and ask about full list of videos which are part of category 'Music' with id = 10 in this case. Any ideas? </p>