private function deleteDefaultAvatars($avatar = '')
{
if ($avatar && $this->isUploadedDefaultAvatar($avatar)) {
$upload = new Gdn_Upload();
$upload->delete(self::DEFAULT_AVATAR_FOLDER . '/' . basename($avatar));
$upload->delete(self::DEFAULT_AVATAR_FOLDER . '/' . basename(changeBasename($avatar, 'p%s')));
$upload->delete(self::DEFAULT_AVATAR_FOLDER . '/' . basename(changeBasename($avatar, 'n%s')));
}
}