Method debug

src/test/common/ObjectContents.h:100–111

  bool exists() { return _exists; }

  void debug(std::ostream &out) {
    out << "_size is " << _size << std::endl;
    out << "seeds is: (";
    for (std::map<uint64_t, unsigned int>::iterator i = seeds.begin();
	 i != seeds.end();
	 ++i) {
      out << "[" << i->first << "," << i->second << "], ";
    }
    out << ")" << std::endl;
    out << "written is " << written << std::endl;
    out << "_exists is " << _exists << std::endl;
  }

  void encode(bufferlist &bl) const {
    using ceph::encode;