def _scan_ad_hoc(xml)
      r = execute(xml, '1.1', timeout: 60)
      Scan.parse(r.res)
    end
def _scan_ad_hoc(xml)
      r = execute(xml, '1.1', timeout: 60)
      Scan.parse(r.res)
    end
Utility method for executing prepared XML and extracting Scan launch
 information.

 @param [REXML::Document] xml Prepared API call to execute.
 @return [Scan] Scan launch information.