code: public void updateRootTypes(ModelNode address, List<ModelNode> modelNodes) {
  
          deck.showWidget(CHILD_VIEW);
          tree.clear();
          descView.clearDisplay();
          formView.clearDisplay();
          offsetDisplay.clear();
  
          // IMPORTANT: when pin down is active, we need to consider the offset to calculate the real address
          addressOffset = address;
          nodeHeader.updateDescription(address);
  
          List<Property> offset = addressOffset.asPropertyList();
          if(offset.size()>0)
          {
              String parentName = offset.get(offset.size() - 1).getName();
              HTML parentTag = new HTML("<div class='gwt-ToggleButton gwt-ToggleButton-down' title='Remove Filter'>&nbsp;" + parentName + "&nbsp;<i class='icon-remove'></i></div>");
              parentTag.addClickHandler(new ClickHandler() {
                  @Override
                  public void onClick(ClickEvent event) {
                      presenter.onPinTreeSelection(null);
                  }
              });
              offsetDisplay.add(parentTag);
          }
  
          TreeItem rootItem = null;
          String rootTitle = null;
          String key = null;
          if(address.asList().isEmpty())
          {
              rootTitle = DEFAULT_ROOT;
              key = DEFAULT_ROOT;
          }
          else
          {
              List<ModelNode> tuples = address.asList();
              rootTitle = tuples.get(tuples.size() - 1).asProperty().getValue().asString();
              key = rootTitle;
          }
  
          SafeHtmlBuilder html = new SafeHtmlBuilder().appendEscaped(rootTitle);
          rootItem = new ModelTreeItem(html.toSafeHtml(), key, address, false);
          tree.addItem(rootItem);
  
  
          deck.showWidget(RESOURCE_VIEW);
          rootItem.setSelected(true);
  
          currentRootKey = key;
  
          addChildrenTypes((ModelTreeItem)rootItem, modelNodes);
      }
docs: Update root node. Basicaly a refresh of the tree.
  
  @param address
  @param modelNodes