def METHOD_NAME(self):
    # create the TracedCache instance for a Flask app
    tracer = Tracer()
    Cache = get_traced_cache(tracer, service=self.SERVICE)
    app = Flask(__name__)
    config = {
        "CACHE_TYPE": "memcached",
        "CACHE_MEMCACHED_SERVERS": [
            "127.0.0.1:{}".format(MEMCACHED_CONFIG["port"]),
            "localhost:{}".format(MEMCACHED_CONFIG["port"]),
        ],
    }
    traced_cache = Cache(app, config=config)
    # extract client data
    meta = _extract_conn_tags(_extract_client(traced_cache.cache))
    expected_meta = {
        "out.host": "127.0.0.1",
        "network.destination.port": MEMCACHED_CONFIG["port"],
    }
    assert meta == expected_meta