How to use the osmium.geom function in osmium

from base64 import b64decode
import os
import re

import osmium as o
import osgeo.ogr as ogr
import osgeo.osr as osr
from shapely.wkb import loads, dumps
from shapely.prepared import prep

from osm_export_tool import GeomType, File

fab = o.geom.WKBFactory()
create_geom = lambda b : ogr.CreateGeometryFromWkb(bytes.fromhex(b))
epsg_4326 = osr.SpatialReference()
epsg_4326.ImportFromEPSG(4326)

CLOSED_WAY_KEYS = ['aeroway','amenity','boundary','building','building:part','craft','geological','historic','landuse','leisure','military','natural','office','place','shop','sport','tourism']
CLOSED_WAY_KEYVALS = {'highway':'platform','public_transport':'platform'}
def closed_way_is_polygon(tags):
    for key in CLOSED_WAY_KEYS:
        if key in tags:
            return True
    for key, val in CLOSED_WAY_KEYVALS.items():
        if key in tags and tags[key] == val:
            return True
    return False

def make_filename(s):

"""Extract Ways from OSM PBF files."""
import os
import time

import osmium as o
import requests
import shapely.wkb as wkblib
from src.config import GEO_DATA_DIR

# http://docs.osmcode.org/pyosmium/latest/intro.html
# A global factory that creates WKB from a osmium geometry
wkbfab = o.geom.WKBFactory()


class WayMap():
    """Extract ways from OpenStreetMap PBF extracts."""

    def __init__(self, extract_type='highway'):
        """The extract_type can be highway, footway, cycleway, or tennis."""
        self.extracter = WayExtracter(extract_type)

    def extract_files(self, file_list):
        """Extract ways from each PBF in file_list."""
        for path in file_list:
            self.run_extraction(path)

    def run_extraction(self, file_path):
        """Extract ways from a PBF file at file_path."""