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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def point_at(self, horizontal_distance, vertical_increment, azimuth):
 """ Compute the point with given horizontal, vertical distances and azimuth from this point. :param horizontal_distance: Horizontal distance, in km. :type horizontal_distance: float :param vertical_increment: Vertical increment, in km. When positive, the new point has a greater depth. When negative, the new point has a smaller depth. :type vertical_increment: float :type azimuth: Azimuth, in decimal degrees. :type azimuth: float :returns: The point at the given distances. :rtype: Instance of :class:`Point` """

        lon, lat = geodetic.point_at(self.longitude, self.latitude,
                                     azimuth, horizontal_distance)
        return Point(lon, lat, self.depth + vertical_increment)