'Send a notification to the originating user.
Args:
message_type: The type of the message. This allows the UI to format
a link to the original object e.g. "ViewObject" or "HostInformation"
subject: The urn of the AFF4 object of interest in this link.
msg: A free form textual message.'

def Notify(self, message_type, subject, msg):

    self.GetRunner().Notify(message_type, subject, msg)
