*
 * <p>This class provides methods to safely extract typed values from Map&lt;String, Object&gt;
 * commonly used when parsing OpenSearch document sources.
 */
public final class MapValueExtractor {

    private MapValueExtractor() {
        // Utility class
    }

    /**
     * Gets a String value from the map.
     *
     * @param map The source map
     * @param key The key to look up

        assertEquals(Boolean.TRUE, MapValueExtractor.getBoolean(map, "true"));
        assertEquals(Boolean.FALSE, MapValueExtractor.getBoolean(map, "false"));
        assertEquals(Boolean.TRUE, MapValueExtractor.getBoolean(map, "stringTrue"));
        assertEquals(Boolean.FALSE, MapValueExtractor.getBoolean(map, "stringFalse"));
        assertNull(MapValueExtractor.getBoolean(map, "missing"));
    }

    @Test