private @Nullable VirtualFileSystemEntry findDescendantByIdPath(int fileId) {
      VirtualFileSystemEntry parent = foundParent;
      if (parentIds != null) {
        for (int i = parentIds.size() - 1; i >= 0; i--) {
          parent = findChild(parent, parentIds.getInt(i));
        }
      }

      return findChild(parent, fileId);
    }
private @Nullable VirtualFileSystemEntry findDescendantByIdPath(int fileId)