new_contents: #!/usr/bin/python3
  # (c)2017 mh-g
  
  def msgRcv (timestamp, source, groupID, message, attachments):
     print ("msgRcv called")
     print (message)
     return
  
  from pydbus import SystemBus
  from gi.repository import GLib
  
  bus = SystemBus()
  loop = GLib.MainLoop()
  
  signal = bus.get('org.asamk.Signal')
  
  signal.onMessageReceived = msgRcv
  loop.run()
  
subject: Create dbus-receive.py