Object (@NotNull List<MavenSimpleNode> selectedNodes) { final List<Navigatable> navigatables = new ArrayList<>(); for (MavenSimpleNode each : selectedNodes) { Navigatable navigatable = each.getNavigatable(); if (navigatable != null) navigatables.add(navigatable); } return navigatables.isEmpty() ? null : navigatables.toArray(Navigatable.EMPTY_NAVIGATABLE_ARRAY); }