/** 
  * Returns list of users
  *
  * @param array $options Optional array of options. Options include:
  *		sort
  *		sort_direction
  *		userclass
  * @return array List of users. Array is keyed on user_id and value is array with all ca_users fields + the last_login time as a unix timestamp
  *
  */
 public function getUserList($options = null)
 {
     $t_user = new ca_users();
     return $t_user->getUserList($options);
 }