static boolean areViewProvidersEquivalent(@NotNull FileViewProvider view1, @NotNull FileViewProvider view2) {
    if (view1.getClass() != view2.getClass() || view1.getFileType() != view2.getFileType()) return false;

    Language baseLanguage = view1.getBaseLanguage();
    if (baseLanguage != view2.getBaseLanguage()) return false;

    if (!view1.getLanguages().equals(view2.getLanguages())) return false;
    PsiFile psi1 = view1.getPsi(baseLanguage);
    PsiFile psi2 = view2.getPsi(baseLanguage);
    if (psi1 == null || psi2 == null) return psi1 == psi2;
    return psi1.getClass() == psi2.getClass();
  }
static boolean areViewProvidersEquivalent(@NotNull FileViewProvider view1, @NotNull FileViewProvider view2)