perspective(400px);\n    transform: perspective(400px);\n  }\n}\n\n@-webkit-keyframes fadeIn {\n  from {\n    opacity: 0;\n  }\n  to {\n    opacity: 1;\n  }\n}\n\n@keyframes fadeIn {\n  from {\n    opacity: 0;\n  }\n  to {\n    opacity: 1;\n  }\n}\n\n@-webkit-keyframes fadeOut {\n  from {\n    opacity: 1;\n  }\n  to {\n    opacity: 0;\n  }\n}\n\n@keyframes fadeOut {\n  from {\n    opacity: 1;\n  }\n  to {\n    opacity: 0;\n  }\n}\n\n@-webkit-keyframes shake {\n  0% {\n    -webkit-transform: translate(2px, 1px) rotate(0deg);\n...

 * reference. It allows you to represent "a {@code T} that must be present" and a "a {@code T} that
 * might be absent" as two distinct types in your program, which can aid clarity.
 *
 * <p>Some uses of this class include
 *
 * <ul>
 *   <li>As a method return type, as an alternative to returning {@code null} to indicate that no
 *       value was available

 *   <li>Use of {@link java.util.Objects#requireNonNull(Object)} is generally discouraged, since
 *       {@link #verifyNotNull(Object)} and {@link Preconditions#checkNotNull(Object)} perform the
 *       same function with more clarity.
 * </ul>
 *
 * <h3>Warning about performance</h3>
 *
 * <p>Remember that parameter values for message construction must all be computed eagerly, and

3. Essa declaração `yield from` informa a função para iterar sobre essa coisa nomeada de `file_like`. E então, para cada parte iterada, fornece essa parte como se viesse dessa função geradora (`iterfile`).

    Então, é uma função geradora que transfere o trabalho de "geração" para alguma outra coisa interna.

attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed...

 *   <li>Streams include primitive-specialized variants such as {@code IntStream}, the use of which
 *       is strongly recommended.
 *   <li>Streams are standard Java, not requiring a third-party dependency.
 * </ul>
 *
 * <h3>Example</h3>
 *
 * <p>Here is an example that accepts a list from a database call, filters it based on a predicate,

	for _, part := range parts {
		_, err = obj.PutObjectPart(context.Background(), part.bucketName, part.objName, part.uploadID, part.PartID,
			mustGetPutObjReader(t, strings.NewReader(part.inputReaderData), part.inputDataSize, part.inputMd5, ""), opts)
		if err != nil {
			t.Fatalf("%s : %s", instanceType, err)
		}
	}
	// Parts to be sent as input for CompleteMultipartUpload.

	partDecRelOffset, partEncRelOffset int64
}

func (d *DecryptBlocksReader) buildDecrypter(partID int) error {
	var partIDbin [4]byte
	binary.LittleEndian.PutUint32(partIDbin[:], uint32(partID)) // marshal part ID

	mac := hmac.New(sha256.New, d.objectEncryptionKey) // derive part encryption key from part ID and object key
	mac.Write(partIDbin[:])
	partEncryptionKey := mac.Sum(nil)

    ```kotlin
    val response: Response = call.execute()
    val multipartReader = MultipartReader(response.body!!)

    multipartReader.use {
      while (true) {
        val part = multipartReader.nextPart() ?: break
        process(part.headers, part.body)
      }
    }
    ```

 *  New: `MediaType.parameter()` gets a parameter like `boundary` from a media type like
    `multipart/mixed; boundary="abc"`.

Pero cuando devuelves algún otro objeto arbitrario que no es un tipo válido de Pydantic (por ejemplo, un objeto de base de datos) y lo anotas así en la función, FastAPI intentará crear un modelo de response de Pydantic a partir de esa anotación de tipo, y fallará.