def headingReceived(heading):
        """
        Method called when a true heading is received.

        @param heading: The heading.
        @type heading: L{twisted.positioning.base.Heading}
        """

        Method called when a true heading is received.

        @param heading: The heading.
        @type heading: L{twisted.positioning.base.Heading}
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/positioning/ipositioning.py