/*
* Get the length of the RDF that was returned by the server of a MusicBrainz::Client object.
*
* Aliases:
* MusicBrainz::Client#get_rdf_len
* MusicBrainz::Client#result_rdf_len
* MusicBrainz::Client#get_result_rdf_len
*
* Example:
* rdf_len = mb.rdf_len
*
*/
static VALUE mb_client_rdf_len(VALUE self) {