docs: protected List<HttpMessage> getSelectedMessages(HttpMessageContainer httpMessageContainer) {
          if (httpMessageContainer instanceof SelectableHttpMessagesContainer) {
              return ((SelectableHttpMessagesContainer) httpMessageContainer).getSelectedMessages();
          } else if (httpMessageContainer instanceof SingleHttpMessageContainer) {
              SingleHttpMessageContainer singleMessageContainer = (SingleHttpMessageContainer) httpMessageContainer;
              if (!singleMessageContainer.isEmpty()) {
                  List<HttpMessage> selectedHttpMessages = new ArrayList<>(1);
                  selectedHttpMessages.add((((SingleHttpMessageContainer) httpMessageContainer).getMessage()));
                  return selectedHttpMessages;
              }
          }
  
          return Collections.emptyList();
      }