code: def _sub_latlon(self, other):
          '''
          Called when subtracting a LatLon object from self
          '''
          inv = self._pyproj_inv(other)
          heading = inv['heading_reverse']
          distance = inv['distance']
          return GeoVector(initial_heading = heading, distance = distancef _sub_latlon(self, other):
          '''
          Called when subtracting a LatLon object from self
          '''
          inv = self._pyproj_inv(other)
          heading = inv['heading_reverse']
          distance = inv['distance']
          return GeoVector(initial_heading = heading, distance = distance)
docs: Called when subtracting a LatLon object from self