formatISOToDateTime method
Converts an ISO string to DateTime, ignoring timezone.
Example: "2025-08-20T14:30:00+02:00".formatISOToDateTime() → DateTime(2025, 8, 20, 14, 30)
Implementation
DateTime formatISOToDateTime () {
String isoDate = substring(0, length - 6).replaceAll('T', ' ');
DateTime newDateTime = DateTime.parse(isoDate);
return newDateTime;
}