code: func (mc MongoClient) EventCount() (int, error) {
  	s := mc.getSessionCopy()
  	defer s.Close()
  
  	count, err := s.DB(mc.database.Name).C(db.EventsCollection).Find(nil).Count()
  	if err != nil {
  		return 0, errorMap(err)
  	}
  	return count, nil
  }
docs: // Get the number of events in Mongo