original_string: public static function get_status_list() {
  
          static $list = null;
  
          if ($list === null) {
              $list = array(
                  self::STATUS_IDLE => self::get_status_name(self::STATUS_IDLE),
                  self::STATUS_WAITING_FOR_REVIEW => self::get_status_name(self::STATUS_WAITING_FOR_REVIEW),
                  self::STATUS_IN_REVIEW => self::get_status_name(self::STATUS_IN_REVIEW));
          }
  
          return $list;
      }
code: public static function get_status_list() {
  
          static $list = null;
  
          if ($list === null) {
              $list = array(
                  self::STATUS_IDLE => self::get_status_name(self::STATUS_IDLE),
                  self::STATUS_WAITING_FOR_REVIEW => self::get_status_name(self::STATUS_WAITING_FOR_REVIEW),
                  self::STATUS_IN_REVIEW => self::get_status_name(self::STATUS_IN_REVIEW));
          }
  
          return $list;
      }
code_tokens: public static function get_status_list ( ) { static $ list = null ; if ( $ list === null ) { $ list = array ( self :: STATUS_IDLE => self :: get_status_name ( self :: STATUS_IDLE ) , self :: STATUS_WAITING_FOR_REVIEW => self :: get_status_name ( self :: STATUS_WAITING_FOR_REVIEW ) , self :: STATUS_IN_REVIEW => self :: get_status_name ( self :: STATUS_IN_REVIEW ) ) ; } return $ list ; }
docstring: Get list of competency status.
  
  @return array
docstring_tokens: Get list of competency status .