boolean (@Nullable Project project, @NotNull List<? extends DiffRequestProducer> diffProducers) { if (diffProducers.size() <= Registry.intValue("diff.external.tool.file.limit")) return true; new Notification("Diff Changes Loading Error", DiffBundle.message("can.t.show.diff.in.external.tool.too.many.files", diffProducers.size()), NotificationType.WARNING) .setDisplayId(DiffNotificationIdsHolder.EXTERNAL_TOO_MANY_SELECTED) .notify(project); return false; }