lost microseconds with DateTime.parse or DateTime.fromMicrosecondsSinceEpoch

datetime_bug.dart

// Based on Flutter 1.26.0-17.3.pre Dart SDK 2.10.4
// filed issue at https://github.com/dart-lang/sdk/issues/44876
main() {
 final datetimeParsed = DateTime.parse('2021-02-05T22:37:12.933232+00:00');
 final datetimeMS = DateTime.fromMicrosecondsSinceEpoch(1612564632933232);
  
 print(datetimeParsed.toIso8601String()); // prints 2021-02-05T22:37:12.933Z
 print(datetimeMS.toUtc().toIso8601String()); // prints 2021-02-05T22:37:12.933Z
  
 print(datetimeParsed.microsecondsSinceEpoch); // prints 1612564632933000
 print(datetimeMS.microsecondsSinceEpoch); // prints 1612564632933000 
}