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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 geojson(self, feature_id):
 """GeoJSON representation of the marker as a point."""

        lat, lon = self.lat_lon
        return {
            'type': 'Feature',
            'id': feature_id,
            'geometry': {
                'type': 'Point',
                'coordinates': (lon, lat),
            },
        }