@Override
  public FileIncludeInfo @NotNull [] getIncludeInfos(@NotNull FileContent content) {
    PsiFile psiFile = content.getPsiFile();
    if (psiFile instanceof XmlFile) {
      return getIncludeInfos((XmlFile)psiFile);
    }
    return FileIncludeInfo.EMPTY;
  }
@Override
  public FileIncludeInfo @NotNull [] getIncludeInfos(@NotNull FileContent content)