final ExtractData extractData = jsonExtractor.getText(in, null);
        CloseableUtil.closeQuietly(in);

        final String content = extractData.getContent();

        // Verify nested content extraction
        assertTrue(content.contains("content.summary"));
        assertTrue(content.contains("This is a sample JSON document for testing"));
    }

import org.codelibs.curl.CurlResponse;

try (CurlResponse response = Curl.get("https://example.com")
                                .param("q", "curl4j")
                                .header("Accept", "application/json")
                                .execute()) {
    System.out.println("Status: " + response.getHttpStatusCode());
    System.out.println(response.getContentAsString());
}
```

### Asynchronous request

```java

        }
    }

    /**
     * Escapes a JSON key-value pair.
     * @param key The key.
     * @param value The value.
     * @return The escaped key-value pair.
     */
    protected String escapeJsonKeyValue(final String key, final String value) {
        return "\"" + key + "\":" + escapeJson(value);
    }

    /**
     * Writes a JSON response.
     * @param status The status code.

Shinsuke Sugaya <******@****.***> 1638450896 +0900

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Shinsuke Sugaya <******@****.***> 1640608546 +0900

Shinsuke Sugaya <******@****.***> 1640608546 +0900

Shinsuke Sugaya <******@****.***> 1638450896 +0900

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