code: private HorizontalSplitPanel getInternalComponent() {
  
          m_rootLayout.setMainHeightFull(true);
          HorizontalSplitPanel sp = new HorizontalSplitPanel();
          sp.setSizeFull();
          VerticalLayout result = new VerticalLayout();
          result.setSizeFull();
          VerticalLayout intro = CmsVaadinUtils.getInfoLayout(Messages.GUI_LINKVALIDATION_INTRODUCTION_0);
          VerticalLayout nullResult = CmsVaadinUtils.getInfoLayout(Messages.GUI_LINKVALIDATION_NO_BROKEN_LINKS_0);
  
          nullResult.setVisible(false);
          CmsLinkValidationInternalTable table = new CmsLinkValidationInternalTable(
              intro,
              nullResult,
              new InternalValidator());
          table.setVisible(false);
          table.setSizeFull();
          table.setWidth("100%");
  
          result.addComponent(table);
          result.addComponent(intro);
          result.addComponent(nullResult);
  
          VerticalLayout leftCol = new VerticalLayout();
          leftCol.setSizeFull();
          CmsInternalResources resources = new CmsInternalResources(table);
          leftCol.addComponent(resources);
  
          leftCol.setExpandRatio(resources, 1);
          sp.setFirstComponent(leftCol);
          sp.setSecondComponent(result);
          sp.setSplitPosition(CmsFileExplorer.LAYOUT_SPLIT_POSITION, Unit.PIXELS);
          return sp;
      }
docs: Returns the component for the internal link validation.<p>
  
  @return vaadin component