How to use the aiozipkin.make_trace_config function in aiozipkin

async def test_client_signals(tracer, fake_transport):
    trace_config = az.make_trace_config(tracer)
    session = aiohttp.ClientSession(trace_configs=[trace_config])

    with tracer.new_trace() as span:
        span.name('client:signals')
        url = 'https://httpbin.org/get'
        # do not propagate headers
        ctx = {'span_context': span.context, 'propagate_headers': False}
        resp = await session.get(url, trace_request_ctx=ctx)
        await resp.text()
        assert resp.status == 200
        assert az.make_context(resp.request_info.headers) is None

        # by default headers added
        ctx = {'span_context': span.context}
        resp = await session.get(url, trace_request_ctx=ctx)
        await resp.text()

async def make_app():
    app = web.Application()
    app.router.add_get('/api/v1/data', handler)

    zipkin_address = 'http://127.0.0.1:9411/api/v2/spans'
    endpoint = az.create_endpoint('service_b', ipv4=host, port=port)
    tracer = await az.create(zipkin_address, endpoint, sample_rate=1.0)
    az.setup(app, tracer)

    trace_config = az.make_trace_config(tracer)

    session = aiohttp.ClientSession(trace_configs=[trace_config])
    app['session'] = session

    async def close_session(app):
        await app['session'].close()

    app.on_cleanup.append(close_session)
    return app

async def make_app():

    app = web.Application()
    app.router.add_get('/api/v1/data', handler)
    app.router.add_get('/', handler)

    endpoint = az.create_endpoint('service_a', ipv4=host, port=port)
    tracer = await az.create(zipkin_address, endpoint, sample_rate=1.0)

    trace_config = az.make_trace_config(tracer)

    session = aiohttp.ClientSession(trace_configs=[trace_config])
    app['session'] = session

    async def close_session(app):
        await app['session'].close()

    app.on_cleanup.append(close_session)

    az.setup(app, tracer)

    TEMPLATES_ROOT = pathlib.Path(__file__).parent / 'templates'
    aiohttp_jinja2.setup(
        app, loader=jinja2.FileSystemLoader(str(TEMPLATES_ROOT))
    )