title: Active users right now (Reporting API v4)
body: <p>I am struggling with getting the currently active users from Reporting API v4 via JavaScript. I found this part of documentation which is dealing with it, where is it available as "rt:activeUsers", but it is for v3, not v4 - <a href="https://developers.google.com/analytics/devguides/reporting/realtime/dimsmets/" rel="nofollow noreferrer">https://developers.google.com/analytics/devguides/reporting/realtime/dimsmets/</a>. It seems like there is no such option available in documentation of v4 - <a href="https://developers.google.com/analytics/devguides/reporting/core/dimsmets#cats=user" rel="nofollow noreferrer">https://developers.google.com/analytics/devguides/reporting/core/dimsmets#cats=user</a> </p>
  
  <p>Did I just overlook something? See my code below</p>
  
  <pre><code> &lt;!-- API CALL --&gt;
  &lt;script&gt;
  
    // VIEW ID
    var view_id = '0000000';
    var start_date = '7daysAgo';
    var end_date = 'today';
  
    // LOAD DATA FROM GOOGLE ANALYTICS
    function loadAnalytics() {
      gapi.client.request({
  
          // CONFIGURATION
          path: '/v4/reports:batchGet',
          root: 'https://analyticsreporting.googleapis.com/',
          method: 'POST',
  
          // REQUEST
          body: { 
              reportRequests: [{
  
                  // VIEW ID
                  viewId: view_id,
  
                  // DATA RANGE FOR RESULTS
                  dateRanges: [{
                      startDate: start_date,
                      endDate: end_date
                  }],
  
                  dimensions: [
  
                      { name:"ga:browser" },
                      { name:"ga:browserVersion" },
                      { name: "ga:userType"}
  
                  ],
  
                  // REQUESTED DATA
                  metrics: [
  
                      { expression: 'ga:hits' },
                      { expression: 'ga:users' },
                      { expression: 'ga:newUsers' },
                      { expression: 'ga:sessions' },
                      { expression: 'ga:avgSessionDuration' },
                      { expression: 'ga:percentNewSessions' },
                      { expression: 'ga:sessionsPerUser'},
                      { expression: 'ga:bounces' },
                      { expression: 'ga:bounceRate' },
                      { expression: 'ga:activeUsers'}
  
                  ]
  
              }]
          }
  
      // PUSH OBTAINED DATA TO DISPLAYING FUNCTION
      }).then(prepareVariables, console.error.bind(console));
    }
  </code></pre>