def METHOD_NAME() -> None:
    config = create_config(
        exemplars=lambda a: {"trace_id": "1234"},
    )
    class CustomPrometheusController(PrometheusController):
        path: str = "/metrics/custom"
        openmetrics_format: bool = True
    @get("/test")
    def test() -> dict:
        return {"hello": "world"}
    with create_test_client([test, CustomPrometheusController], middleware=[config.middleware]) as client:
        client.get("/test")
        metrix_exporter_response = client.get("/metrics/custom")
        assert metrix_exporter_response.status_code == HTTP_200_OK
        metrics = metrix_exporter_response.content.decode()
        assert (
            """litestar_requests_total{app_name="litestar",method="GET",path="/test",status_code="200"} 1.0 # {trace_id="1234"} 1.0"""
            in metrics
        )