toLocal method

DateTime toLocal ()

Returns this DateTime value in the local time zone.

Returns this if it is already in the local time zone. Otherwise this method is equivalent to:

new DateTime.fromMicrosecondsSinceEpoch(microsecondsSinceEpoch,
                                        isUtc: false)

Implementation 

DateTime toLocal() {
  if (isUtc) {
    return new DateTime._withValue(_value, isUtc: false);
  }
  return this;
}