// indention for sequence fields.
// TODO(wvo): ToStringVisitor already has indentation functionality, use
// that directly instead of this sub-class?
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) {}