private final KongaTree tree;
public ProjectItemTree(ScriptBuilderModel model) {
this.model = model;
tree = createTree();
selSource = new TreeSelectionSource(tree);
selSource.setNodeObjectConverter(new UserObjectNodeObjectConverter(IntegrationEntity.class));
projectListener = new ProjectListenerImpl();
model.getProject().addProjectListener(projectListener);
projectChangeSupport = new ProjectPropertyChangeSupport(model.getProject());
projectChangeSupport.addPropertyChangeListener(new ChangeListener());