How to use the pytileproj.geometry.create_geometry_from_wkt function in pytileproj

# load WKT string and extent shape
        data = Equi7Grid._static_data[continent]

        _core = copy.copy(core)
        _core.tag = continent
        _core.projection = TPSProjection(wkt=data['wkt'])

        # holds core parameters of the (sub-) grid
        self.core = _core

        # holds name of the subgrid
        self.name = ''.join(('EQUI7_', continent, Equi7Grid.encode_sampling(core.sampling), 'M'))

        # holds the extent of the subgrid in the lonlat-space
        self.polygon_geog = create_geometry_from_wkt(data['zone_extent'], epsg=4326)

        # defines the tilingsystem of the subgrid
        self.tilesys = Equi7TilingSystem(self.core, self.polygon_geog)

        super(Equi7Subgrid, self).__init__(self.core, self.polygon_geog, self.tilesys)