How to use the aiozipkin.create function in aiozipkin

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_c', ipv4=host, port=port)
    tracer = await az.create(zipkin_address, endpoint, sample_rate=1.0)
    az.setup(app, tracer)
    return app

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_d', ipv4=host, port=port)
    tracer = await az.create(zipkin_address, endpoint, sample_rate=1.0)
    az.setup(app, tracer)
    return app

async def make_app(host, port):
    app = web.Application()
    app.router.add_get('/', index)

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

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

async def run():
    # setup zipkin client
    zipkin_address = 'http://127.0.0.1:9411/api/v2/spans'
    # address and name of current machine for better trace information
    endpoint = az.create_endpoint('minimal_example', ipv4='127.0.0.1')

    # creates tracer object that tracer all calls if you want sample
    # only 50% just set sample_rate=0.5
    async with az.create(zipkin_address, endpoint, sample_rate=1.0) as tracer:
        # create and setup new trace
        with tracer.new_trace() as span:
            # here we just add name to the span for better search in UI
            span.name('root::span')
            # imitate long SQL query
            await asyncio.sleep(0.1)

    print('Done, check zipkin UI')

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))

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_e', ipv4=host, port=port)
    tracer = await az.create(zipkin_address, endpoint, sample_rate=1.0)
    az.setup(app, tracer)
    return app

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