uninstaller = new DynamicTreeModelUpdater(explorer.getProject(), treeModel);
editAction = explorer.getEditSelectedEntityAction(entityType);
createNewAction = explorer.getCreateNewEntityAction(entityType, new NewItemCallback());
newItemHandler = NoReceiver.create();
comboModel = new ComboModelImpl(treeModel);
comboBox = new KongaComboBox(comboModel);
comboBox.setPrototypeDisplayValue("XXXXXXXXXXXXXXXXXXXXxXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");
comboBox.setMaximumRowCount(Intervals.valueWithin(comboModel.getSize(), 8, 20));
TreeComboBoxSelectionControl.install(comboBox);
renderer = new DefaultTreeComboBoxRenderer(comboModel, new IntegrationEntityListDecorRenderer());
comboBox.setRenderer(renderer);