docs: private static Class<? extends HelpViewBase> getViewClass(HelpViewType viewType) {
          switch (viewType) {
              case TOC:
                  return HelpViewContents.class;
              
              case KEYWORD:
                  return HelpViewIndex.class;
              
              case INDEX:
                  return HelpViewIndex.class;
              
              case SEARCH:
                  return HelpViewSearch.class;
              
              case HISTORY:
                  return HelpViewHistory.class;
              
              case GLOSSARY:
                  return HelpViewIndex.class;
              
              default:
                  return null;
          }
      }