title: Youtube v3 API - pageToken doesn't work
body: <p>I'm struggling a bit with the Youtube v3 API, specifically the <code>pageToken</code> concept.  It's one I'm familiar with from dozens of other APIs, but this one doesn't seem to work.</p>
  
  <p>I make a search request and get the expected results, along with a <code>nextPageToken</code> since there are more than the requested number of results.</p>
  
  <p>I then perform a request and pass that pageToken value, but I start to get incorrect results after that.</p>
  
  <p>Here's the code I have so far (I do load the gapi client in another piece of code)...</p>
  
  <pre><code>function getVideos(pageToken) {
      var options = {
          channelId: "UC1HkhNoUIYYyaruWmxRRUsQ",
          q: "GTA V - Stunt practise",
          part: "snippet",
          maxResults: 10,
          order: "date"
      };
  
      if (pageToken) {
          options.pageToken = pageToken;
      }
  
      var request = gapi.client.youtube.search.list(options);
  
      request.execute(function(response) {
          var items = response.result.items;
          if (!items.length) return;
  
          for (var i = 0; i &lt; items.length; i++) {
              var item = items[i];
              addVideo({
                  id: item.id.videoId,
                  title: item.snippet.title,
                  description: item.snippet.description,
                  date: new Date(item.snippet.publishedAt),
                  thumbnail: item.snippet.thumbnails.high.url
              });
          }
  
          if (response.nextPageToken) {
              getVideos(response.nextPageToken);
          }
      });
  }
  
  function addVideo(video) {
      console.log(video.title);
  }
  
  getVideos();
  </code></pre>
  
  <p>The first batch of results shows the following:</p>
  
  <pre><code>GTA V - Stunt practise 21
  GTA V - Stunt practise 20
  GTA V - Stunt practise 19
  GTA V - Stunt practise 18 (version 1)
  GTA V - Stunt practise 18 (version 2)
  GTA V - Stunt practise 17
  GTA V - Stunt practise 16
  GTA V - Stunt practise 15
  GTA V - Stunt practise 14
  GTA V - Stunt practise 13
  </code></pre>
  
  <p>which is correct (well, close enough).  The second batch of results, though, is just completely wrong...</p>
  
  <pre><code>GTA V - Stunt practise 01
  GTA V - Stunt practise 07
  GTA V - Stunt practise 02
  GTA V - Stunt practise 08
  </code></pre>
  
  <p>There's not enough of them, they're not the expected videos and they're not in order.</p>
  
  <p>Has anyone had any experience with the Youtube API, particularly using page tokens with search results?  I'd really appreciate some help with this.</p>