`xl.meta` carries first 8 bytes an XL header which describes the current format and the format version,
allowing the unmarshaller's to automatically use the right data structures to parse the subsequent content in the stream.

### v1.0

| Entry     | Encoding    | Content
| ----------|-------------|----------------------------------------
| xlHeader  | [4]byte     | `'X', 'L', '2', ' '`
| xlVersion | [4]byte     | `'1', ' ', ' ', ' '`

index.field.mimetype=mimetype
index.field.parent_id=parent_id
index.field.important_content=important_content
index.field.content=content
index.field.content_minhash_bits=content_minhash_bits
index.field.cache=cache
index.field.digest=digest
index.field.title=title
index.field.host=host
index.field.site=site
index.field.content_length=content_length
index.field.filetype=filetype
index.field.filename=filename

    public String getContent() {
        checkSpecifiedProperty("content");
        return convertEmptyToNull(content);
    }

    public void setContent(String value) {
        registerModifiedProperty("content");
        this.content = value;
    }

    public String getCreatedBy() {
        checkSpecifiedProperty("createdBy");

    public void debug(Supplier<String> content) {
        if (isDebugEnabled()) {
            logger.debug(content.get());
        }
    }

    @Override
    public void debug(Supplier<String> content, Throwable error) {
        if (isDebugEnabled()) {
            logger.debug(content.get(), error);
        }
    }

    @Override
    public void info(CharSequence content) {
        if (isInfoEnabled()) {

		// Empty Content-Md5 header.
		{mustNewSignedEmptyMD5Request(http.MethodPut, "http://127.0.0.1:9000/", 5, bytes.NewReader([]byte("hello")), t), ErrInvalidDigest},
		// Short Content-Md5 header.
		{mustNewSignedShortMD5Request(http.MethodPut, "http://127.0.0.1:9000/", 5, bytes.NewReader([]byte("hello")), t), ErrInvalidDigest},
		// When request is properly signed, but has bad Content-MD5 header.

      FileInputStream(filePath.toFile()).use { fis ->
        fn(fis.fd)
      }
    }
  }

  private inline fun <T> assertOnPath(
    content: String? = null,
    fn: (okio.Path) -> T,
  ): T {
    FileSystem.SYSTEM.write(filePath) {
      if (content != null) {
        writeUtf8(content)
      }
    }

    return fn(filePath)
  }

       *
       * Example:
       * ```
       * --> POST /greeting http/1.1
       * Host: example.com
       * Content-Type: plain/text
       * Content-Length: 3
       * --> END POST
       *
       * <-- 200 OK (22ms)
       * Content-Type: plain/text
       * Content-Length: 6
       * <-- END HTTP
       * ```
       */
      HEADERS,

      /**

                        "200": {
                            "description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        },
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {
                                    "schema": {

//	encryptedContent := Encrypt(compressedContent)
//
//	// Now, we need an io.Reader that can access
//	// the ETag computed over the content.
//	reader := etag.Wrap(encryptedContent, content)
func Wrap(wrapped, content io.Reader) io.Reader {
	if t, ok := content.(Tagger); ok {
		return wrapReader{
			Reader: wrapped,
			Tagger: t,
		}
	}
	return wrapReader{
		Reader: wrapped,
	}
}

    response = client.post(
        "/items/",
        content='{"name": "Foo", "price": 50.5}',
        headers={"Content-Type": "application/geo+json"},
    )
    assert response.status_code == 200, response.text


@needs_py310
def test_no_content_type_is_json(client: TestClient):
    response = client.post(
        "/items/",
        content='{"name": "Foo", "price": 50.5}',
    )