title: Origin of tokens in Google trends API call
body: <p>When I download a CSV from a Google trends query (e.g. <a href="https://trends.google.com/trends/explore?q=trump" rel="nofollow noreferrer">here</a>), I see a HTTP GET request to </p>
  
  <pre><code>https://www.google.com/trends/api/widgetdata/multiline/csv
  </code></pre>
  
  <p>with params</p>
  
  <pre><code>req:{"time":"2012-02-18 2017-02-18","resolution":"WEEK","locale":"en-GB","comparisonItem":[{"geo":{},"complexKeywordsRestriction":{"keyword":[{"type":"BROAD","value":"trump"}]}}],"requestOptions":{"property":"","backend":"IZG","category":0}}
  token:APP6_UEAAAAAWKm9N57FxjXrnfxhxhe5SEax6DyR97sY
  tz:-120
  </code></pre>
  
  <p>The req and tz params make sense, but I am unsure how the token is generated. Can someone explain to me where this comes from? Do I need to use oauth2 packages to create these tokens?</p>