metadata_map
Get document metadata from a file.
This function converts all metadata values of any type are converted to UTF-8 strings. It outputs date/time values in UTC in the ISO-8601 date format YYYY-MM-DDThh:mm:ssZ. For example 2016-02-09T16:15:51Z.
Syntax
template<typename Input_Type > std::multimap<std::string, std::string> Session::metadata_map(Input_Type &input)