/// <summary>
/// Gets a single calendar event by platform-specific ID.
/// </summary>
/// <param name="externalId">Platform-specific calendar event identifier</param>
/// <returns>The corresponding calendar event, or null if not found</returns>
/// <exception cref="System.UnauthorizedAccessException">Calendar access denied</exception>
/// <exception cref="Calendars.Plugin.Abstractions.PlatformException">Unexpected platform-specific error</exception>
public async Task <CalendarEvent> GetEventByIdAsync(string externalId)
{
if (string.IsNullOrWhiteSpace(externalId))
{
return(null);
}
await RequestCalendarAccess().ConfigureAwait(false);
var iosEvent = _eventStore.EventFromIdentifier(externalId);
return(iosEvent == null ? null : iosEvent.ToCalendarEvent());
}
