Function isSeries

codebase/sources/dhtmlxscheduler.es.js:18315–18317

(event2)

    return !!event2.deleted;
  }
  function isSeries(event2) {
    return !!event2.rrule && !event2.recurring_event_id;
  }
  function clearRecurringProperties(event2) {
    event2.rrule = "";
    event2.original_start = null;