code: public function getDefinitionAllowableValues()
      {
          return [
              self::DEFINITION_NONE,
              self::DEFINITION_CANCEL,
              self::DEFINITION_COMPENSATION,
              self::DEFINITION_ERROR,
              self::DEFINITION_ESCALATION,
              self::DEFINITION_MESSAGE,
              self::DEFINITION_LINK,
              self::DEFINITION_SIGNAL,
              self::DEFINITION_TERMINATE,
              self::DEFINITION_TIMER,
          ];
      }
docs: Gets allowable values of the enum
  @return string[]