public static @NotNull GlobalSearchScope openFilesScope(@NotNull Project project) {
    FileEditorManager fileEditorManager = FileEditorManager.getInstance(project);
    final VirtualFile[] files = fileEditorManager != null ? fileEditorManager.getOpenFiles() : VirtualFile.EMPTY_ARRAY;
    return GlobalSearchScope.filesScope(project, Arrays.asList(files), IdeBundle.message("scope.open.files"));
  }
public static @NotNull GlobalSearchScope openFilesScope(@NotNull Project project)