How do I know if calendar sync is disabled in iCloud settings?

Is there any way to know that iPhone Settings

→ iCloud

→ Calendars

off / on? Because in both cases, the app gets iCloud in the object EKSource

.

    // Get the calendar source
EKSource* currentSource;
for (EKSource *source in eventStore.sources)
{
    if (source.sourceType == EKSourceTypeCalDAV &&
        [source.title isEqualToString:@"iCloud"])
    {/*True in two cases
      1. if iCloud Signed In and Calendars switch is On
      2. if iCloud Signed In but Calendars switch is Off*/

        currentSource = source;
        break;
    }
}