class_docstr: Abstract base class for protocol messages.
  
  Protocol message classes are almost always generated by the protocol
  compiler.  These generated types subclass Message and implement the methods
  shown below.
code: def __ne__(self, other_msg):
      # Can't just say self != other_msg, since that would infinitely recurse. :)
      return not self == other_msg
  
label_desc: Use image node_id 3 for calling the Message obj's underlying member method code with example usage: obj.__ne__(other_msg) and returns: unknown