@Override
  public @Nullable VirtualFile findChild(@NotNull @NonNls String name) {
    if (!ContainerUtil.isEmpty(myChildren)) {
      for (VirtualFile child : myChildren) {
        if (StringUtil.equals(child.getNameSequence(), name)) {
          return child;
        }
      }
    }
    return null;
  }
@Override
  public @Nullable VirtualFile findChild(@NotNull @NonNls String name)