Calculate the inverse geodesic between locations in segments.

        Returns:
            list of 2-tuple of float: Groups in bearing and distance between
                points in segments

def inverse(self):
        """Calculate the inverse geodesic between locations in segments.

        Returns:
            list of 2-tuple of float: Groups in bearing and distance between
                points in segments
        """
        inverses = []
        for segment in self:
            if len(segment) < 2:
                inverses.append([])
            else:
                inverses.append(segment.inverse())
        return inverses