def activity
      r = execute(make_xml('ScanActivityRequest'))
      res = []
      if r.success
        r.res.elements.each('//ScanSummary') do |scan|
          res << ScanData.parse(scan)
        end
      end
      res
    end
def activity
      r = execute(make_xml('ScanActivityRequest'))
      res = []
      if r.success
        r.res.elements.each('//ScanSummary') do |scan|
          res << ScanData.parse(scan)
        end
      end
      res
    end
Retrieve a list of current scan activities across all Scan Engines
 managed by Nexpose. This method returns lighter weight objects than
 scan_activity.

 @return [Array[ScanData]] Array of ScanData objects associated with
   each active scan on the engines.