307     headers_map hm;  in read_headers()  local
334             hm[he.name()] = he;  in read_headers()
344     return std::pair< size_t, headers_map >(tkz.lineno(), hm);  in read_headers()
348 impl::write_headers(const impl::headers_map& hm, std::ostream& os)  in write_headers()  argument
350     assert(!hm.empty());  in write_headers()
351     headers_map::const_iterator ct = hm.find("Content-Type");  in write_headers()
352     assert(ct != hm.end());  in write_headers()
354     for (headers_map::const_iterator iter = hm.begin(); iter != hm.end();  in write_headers()
363 impl::validate_content_type(const impl::headers_map& hm, const std::string& fmt,  in validate_content_type()  argument
368     headers_map::const_iterator iter = hm.find("Content-Type");  in validate_content_type()
369     if (iter == hm.end())  in validate_content_type()