@Nullable
  private StructureViewBuilder getBuilder(@NotNull PsiFile psiFile, @NotNull Language language) {
    FileViewProvider viewProvider = psiFile.getViewProvider();
    Language baseLanguage = viewProvider.getBaseLanguage();
    PsiFile psi = viewProvider.getPsi(language);
    if (psi == null) return null;
    if (language == baseLanguage) return createMainBuilder(psi);
    PsiStructureViewFactory factory = LanguageStructureViewBuilder.getInstance().forLanguage(language);
    return factory == null ? null : factory.getStructureViewBuilder(psi);
  }
@Nullable
  private StructureViewBuilder getBuilder(@NotNull PsiFile psiFile, @NotNull Language language)