/*
   * WS-Transport
   *
   * put: Change a resource
   *
   * call-seq:
   *   client.put(options, uri, xml, xml.size, "utf-8") -> XmlDoc
   *
   */
  WsXmlDocH put( client_opt_t *options, const char *resource_uri, const char *data, size_t size, const char *encoding = "utf-8") {