e.aggregate = newAggVal(funcName)

		var exprA qProp
		if funcName == aggFnCount {
			if e.Count.StarArg {
				return qProp{isAggregation: true}
			}

			exprA = e.Count.ExprArg.analyze(s)
		} else {
			if len(e.SFunc.ArgsList) != 1 {
				return qProp{err: fmt.Errorf("%s takes exactly one argument", funcName)}
			}
			exprA = e.SFunc.ArgsList[0].analyze(s)
		}

		if exprA.err != nil {

        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/schema_extra/": {
                "post": {
                    "summary": "Schema Extra",
                    "operationId": "schema_extra_schema_extra__post",
                    "requestBody": {
                        "content": {
                            "application/json": {

	FILE_SIZE=$(docker exec resiliency-minio$NODE-1 /bin/sh -c "stat --printf="%s" $DIR/test-bucket/initial-data/$FILE/$UUID/part.1")
	TAIL_SIZE=$((FILE_SIZE - 32 * 2))

	# Extract head and tail of file
	$(docker exec resiliency-minio$NODE-1 /bin/sh -c "cat $DIR/test-bucket/initial-data/$FILE/$UUID/part.1 | head --bytes 32 > /tmp/head")

    } else if (test instanceof TestCase) {
      TestCase testCase = (TestCase) test;
      return getMethod(testCase.getClass(), testCase.getName());
    } else {
      throw new IllegalArgumentException("unable to extract method from test: not a TestCase.");
    }
  }

  protected TestSuite makeSuiteForTesterClass(Class<? extends AbstractTester<?>> testerClass) {
    TestSuite candidateTests = new TestSuite(testerClass);

```Python
async with lifespan(app):
    await do_stuff()
```

Cuando creas un context manager o un async context manager como arriba, lo que hace es que, antes de entrar al bloque `with`, ejecutará el código antes del `yield`, y al salir del bloque `with`, ejecutará el código después del `yield`.

// sumHMAC calculate hmac between two input byte array.
func sumHMAC(key []byte, data []byte) []byte {
	hash := hmac.New(sha256.New, key)
	hash.Write(data)
	return hash.Sum(nil)
}

// extractSignedHeaders extract signed headers from Authorization header
func extractSignedHeaders(signedHeaders []string, r *http.Request) (http.Header, APIErrorCode) {
	reqHeaders := r.Header
	reqQueries := r.Form

				"X-Amz-Content-Sha256": payloadSHA256,
			},
			region:   "us-west-1",
			expected: ErrUnsignedHeaders,
		},
		// (3) Should fail to extract headers if the host header is not signed.
		{
			queryParams: map[string]string{
				"X-Amz-Algorithm":      signV4Algorithm,
				"X-Amz-Date":           now.Format(iso8601Format),
				"X-Amz-Expires":        "60",

////

The last `CommonQueryParams`, in:

```Python
... Depends(CommonQueryParams)
```

...is what **FastAPI** will actually use to know what is the dependency.

It is from this one that FastAPI will extract the declared parameters and that is what FastAPI will actually call.

---

In this case, the first `CommonQueryParams`, in:

//// tab | Python 3.9+

```Python
commons: Annotated[CommonQueryParams, ...

////

O último `CommonQueryParams`, em:

```Python
... Depends(CommonQueryParams)
```

...é o que o **FastAPI** irá realmente usar para saber qual é a dependência.

É a partir dele que o FastAPI irá extrair os parâmetros passados e será o que o FastAPI irá realmente chamar.

---

Nesse caso, o primeiro `CommonQueryParams`, em:

//// tab | Python 3.9+

```Python
commons: Annotated[CommonQueryParams, ...

Pero si estás seguro de que el contenido que estás devolviendo es **serializable con JSON**, puedes pasarlo directamente a la clase de response y evitar la sobrecarga extra que FastAPI tendría al pasar tu contenido de retorno a través de `jsonable_encoder` antes de pasarlo a la clase de response.