9 #include "owlcpp/detail/object_id_base.hpp"
15 class Doc_id :
public detail::Base_id<Doc_id> {
17 explicit Doc_id(
const unsigned x) : base(x) {}
23 template<
class ChT,
class Tr>
inline std::basic_ostream<ChT,Tr>& operator<<(
24 std::basic_ostream<ChT,Tr>& os,
27 return os <<
"Doc" << id();