"/c",
    responses={
        "400": {"description": "Error with str"},
        "5xx": {"description": "Error with range, lower"},
        "default": {"description": "A default response"},
    },
)
async def c():
    return "c"


@router.get(
    "/d",
    responses={
        "400": {"description": "Error with str"},
        "5XX": {"model": ResponseModel},
        "default": {"model": ResponseModel},
    },
)

		"Total number of requests", "name", "type")
	apiRequestsErrorsTotalMD = NewCounterMD(apiRequestsErrorsTotal,
		"Total number of requests with (4xx and 5xx) errors", "name", "type")
	apiRequests5xxErrorsTotalMD = NewCounterMD(apiRequests5xxErrorsTotal,
		"Total number of requests with 5xx errors", "name", "type")
	apiRequests4xxErrorsTotalMD = NewCounterMD(apiRequests4xxErrorsTotal,
		"Total number of requests with 4xx errors", "name", "type")

    # Ref: https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.1.0.md#patterned-fields-1
    if status_code in {
        "default",
        "1XX",
        "2XX",
        "3XX",
        "4XX",
        "5XX",
    }:
        return True
    current_status_code = int(status_code)
    return not (current_status_code < 200 or current_status_code in {204, 205, 304})


def get_path_param_names(path: str) -> set[str]:

)

// ResponseRecorder - is a wrapper to trap the http response
// status code and to record the response body
type ResponseRecorder struct {
	http.ResponseWriter
	io.ReaderFrom
	StatusCode int
	// Log body of 4xx or 5xx responses
	LogErrBody bool
	// Log body of all responses
	LogAllBody bool

	ttfbHeader time.Duration
	ttfbBody   time.Duration

	StartTime time.Time
	// number of bytes written
	bytesWritten int

          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{server,api}}",
          "refId": "A"
        }
      ],
      "title": "S3 API Request Error Rate (5xx)",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${DS_PROMETHEUS}"
      },
      "fieldConfig": {
        "defaults": {

    doTestCollapse("---", "_");
    doTestCollapse("--x-", "_x_");
    doTestCollapse("--xx", "_xx");
    doTestCollapse("-x--", "_x_");
    doTestCollapse("-x-x", "_x_x");
    doTestCollapse("-xx-", "_xx_");
    doTestCollapse("x--x", "x_x");
    doTestCollapse("x-x-", "x_x_");
    doTestCollapse("x-xx", "x_xx");
    doTestCollapse("x-x--xx---x----x", "x_x_xx_x_x");

    doTestCollapseWithNoChange("");

## 0.85.1 (2022-10-14)

### Fixes

* 🐛 Fix support for strings in OpenAPI status codes: `default`, `1XX`, `2XX`, `3XX`, `4XX`, `5XX`. PR [#5187](https://github.com/tiangolo/fastapi/pull/5187) by [@JarroVGIT](https://github.com/JarroVGIT).

### Docs