docs: private boolean isProductExtensionInstalled(String inputString, String productExtension) {
          if ((productExtension == null) || (inputString == null)) {
              return false;
          }
          int msgIndex = inputString.indexOf("CWWKF0012I: The server installed the following features:");
          if (msgIndex == -1) {
              return false;
          }
  
          String msgString = inputString.substring(msgIndex);
          int leftBracketIndex = msgString.indexOf("[");
          int rightBracketIndex = msgString.indexOf("]");
          if ((leftBracketIndex == -1) ||
              (rightBracketIndex == -1) ||
              (rightBracketIndex < leftBracketIndex)) {
              return false;
          }
  
          String features = msgString.substring(leftBracketIndex, rightBracketIndex);
          Log.info(c, "isProductExtensionInstalled", features);
          if (features.indexOf(productExtension) == -1) {
              return false;
          }
          return true;
      }