docs: public Window getWindow(final String controllerId) {
          final Optional<Target> target = targetManagement.getByControllerID(controllerId);
          if (!target.isPresent()) {
              uINotification.displayWarning(i18n.getMessage("target.not.exists", controllerId));
              return null;
          }
          populateValuesOfTarget(target.get());
          createNewWindow();
          window.setCaption(i18n.getMessage("caption.update", i18n.getMessage("caption.target")));
          window.addStyleName("target-update-window");
          return window;
      }