/**
* Merges two user detail value objects
*
* @param UserDetails $established
* @param UserDetails $patch
*
* @return UserDetails
*/
public static function mergeProfileData(UserDetails $established, UserDetails $patch)
{
// since the current business behavior does not allow the change of email addresses
// or the registration date, these values are immutable
return new self($established->getEmail(), $patch->getLastAction(), $established->getRegistrationDate(), $patch->getLocale() ?: $established->getLocale(), $patch->getRealName() ?: $established->getRealName(), $patch->isLocked());
}