struct IndentedToStringVisitor : flatbuffers::ToStringVisitor {
  std::string indent_str;
  int indent_level;

  IndentedToStringVisitor(const std::string& delimiter,
                          const std::string& indent)
      : ToStringVisitor(delimiter), indent_str(indent), indent_level(0) {}

  void indent() {
    for (int i = 0; i < indent_level; ++i) s.append(indent_str);
  }

  // Adjust indention for fields in sequences.

  void AddBlankLine();
  void IncreaseIndent();
  void DecreaseIndent();

 private:
  struct Line {
    int indent;
    string text;
  };

  void ValidateAndAddLine(int indent_level, const string &raw_line);

  int spaces_per_indent_ = 2;
  int current_indent_ = 0;
  std::vector<Line> lines_;
};

}  // namespace generator
}  // namespace tensorflow

        }
        return builder.toString();
    }

    private void printException(TestDescriptor descriptor, Throwable exception, boolean cause, int indentLevel, StringBuilder builder) {
        String indent = Strings.repeat(INDENT, indentLevel);
        builder.append(indent);
        if (cause) {
            builder.append("Caused by: ");
        }