public static boolean navigateToSource(boolean requestFocus,
                                         boolean tryNotToScroll,
                                         @Nullable Iterable<? extends Navigatable> navigatables) {
    if (navigatables == null) {
      return false;
    }
    boolean alreadyNavigatedToSource = false;
    for (Navigatable navigatable : navigatables) {
      if (navigateToSource(requestFocus, tryNotToScroll, navigatable)) {
        alreadyNavigatedToSource = true;
      }
    }
    return alreadyNavigatedToSource;
  }
public static boolean navigateToSource(boolean requestFocus,
                                         boolean tryNotToScroll,
                                         @Nullable Iterable<? extends Navigatable> navigatables)