Method getExcluded

/**
 * Method to get the users to exclude from the list of users
 *
 * @return  mixed  Array of users to exclude or null to to not exclude them
 *
 * @since   1.6
 */
protected function getExcluded()
{
    if (isset($this->element['exclude'])) {
        return explode(',', $this->element['exclude']);
    }
}