enableActivityTracking(minimumVisitLength, heartbeat) {
        const { name } = config;
        enableActivityTracking({ minimumVisitLength: minimumVisitLength, heartbeatDelay: heartbeat }, [name]);
      }
Enables Activity Tracking
Generates page ping events based on user activity on page
Should be called before first page view event
@param {number} [minimumVisitLength] - Minimum visit length before first page ping event fires
@param {number} [heartbeat] - Period where user must be active to fire the next page ping