old_contents: """Discover Home Assistant servers."""
  from . import MDNSDiscoverable
  
  
  class Discoverable(MDNSDiscoverable):
      """Add support for discovering Home Assistant instances."""
  
      def __init__(self, nd):
          super(Discoverable, self).__init__(nd, '_hass-mobile-app._tcp.local.')
  
new_contents: """Discover Home Assistant servers."""
  from . import MDNSDiscoverable
  
  
  class Discoverable(MDNSDiscoverable):
      """Add support for discovering mobile apps that support Home Assistant."""
  
      def __init__(self, nd):
          super(Discoverable, self).__init__(nd, '_hass-mobile-app._tcp.local.')
  
subject: Update hass_mobile_app.py