docs: private void commit() {
  
          m_selectionDone = true;
          if (!m_filesToUpload.isEmpty()) {
              m_okButton.disable(Messages.get().key(Messages.GUI_UPLOAD_BUTTON_OK_DISABLE_UPLOADING_0));
              if (m_uploadButton instanceof UIObject) {
                  ((UIObject)m_uploadButton).getElement().getStyle().setDisplay(Display.NONE);
              }
              showProgress();
              submit();
          }
      }