public static @NotNull IndentStrategy getIndentStrategy(@Nullable PsiFile file) {
    if (file != null) {
      Language language = file.getLanguage();
      IndentStrategy strategy = INSTANCE.forLanguage(language);
      if (strategy != null) {
        return strategy;
      }
    }
    return DEFAULT_INDENT_STRATEGY;
  }
public static @NotNull IndentStrategy getIndentStrategy(@Nullable PsiFile file)