new_contents: """Discover digitalSTROM server IP (dss-ip)  devices."""
  from . import MDNSDiscoverable
  
  
  class Discoverable(MDNSDiscoverable):
      """Add support for discovering digitalSTROM server IP (dss-ip) devices."""
  
      def __init__(self, nd):
          super(Discoverable, self).__init__(nd, '_http._tcp.local.')
  
      def get_entries(self):
          return self.find_by_device_name('dss-ip')
  
subject: add support for digitalstrom ip servers (dss-ip) (#239)