def METHOD_NAME(self, zoom_level, tile_col, tile_row):
    mapbox_vector_tile = vd.importExternal('mapbox_vector_tile', 'mapbox-vector-tile')
    con = sqlite3.connect(str(self.source))
    tile_data = con.execute('''
   SELECT tile_data FROM tiles
       WHERE zoom_level = ?
         AND tile_column = ?
         AND tile_row = ?''', (zoom_level, tile_col, tile_row)).fetchone()[0]
    return mapbox_vector_tile.decode(gzip.decompress(tile_data))