assertThat(map.containsKey("3"), is(not(true)));
        map.put("3", null);
        assertThat(map.containsKey("3"), is(true));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testIndexOf() throws Exception {
        assertThat(map.indexOf("test"), is(1));
        assertThat(map.indexOf(null), is(0));
        assertThat(map.indexOf("test3"), is(-1));

     */
    public static ParameterizedClassDesc createParameterizedClassDesc(final Field field, final Map<TypeVariable<?>, Type> map) {
        assertArgumentNotNull("field", field);
        assertArgumentNotNull("map", map);

        return createParameterizedClassDesc(field.getGenericType(), map);
    }

    /**

        }
    }

    /**
     * Copies from a {@literal Map} to another {@literal Map}.
     *
     * @param src The source {@literal Map}. Must not be {@literal null}.
     * @param dest The destination {@literal Map}. Must not be {@literal null}.
     */
    public static void copyMapToMap(final Map<String, ? extends Object> src, final Map<String, Object> dest) {
        copyMapToMap(src, dest, DEFAULT_OPTIONS);
    }

        map.put("two", "2");
    }

    /**
     * @throws Exception
     */
    @After
    public void tearDown() throws Exception {
        map = null;
    }

    /**
     * @throws Exception
     */
    @Test
    public void testContainsKey() throws Exception {
        assertThat(map.containsKey("ONE"), is(true));
        assertThat(map.containsKey("one"), is(true));

 *
 */
public class DocMap implements Map<String, Object> {

    /** The key used for language field identification */
    private static final String LANG_KEY = "lang";

    /** The underlying map that this DocMap wraps */
    private final Map<String, Object> parent;

    /**
     * Constructor that creates a DocMap wrapping the given parent map.
     *
     * @param parent the map to wrap and delegate operations to
     */

    /**
     * Creates a configuration parameter map.
     *
     * @param configParameters the configuration parameters
     * @return the configuration parameter map
     */
    public static Map<ConfigName, Map<String, String>> createConfigParameterMap(final String configParameters) {
        final Map<ConfigName, Map<String, String>> map = new HashMap<>();
        final Map<String, String> configConfigMap = new LinkedHashMap<>();

        case WildcardType wildcard -> getActualClass(wildcard.getUpperBounds()[0], map);
        case TypeVariable<?> typeVar -> map.containsKey(typeVar) ? getActualClass(map.get(typeVar), map)
                : getActualClass(typeVar.getBounds()[0], map);
        case GenericArrayType arrayType -> {
            Class<?> componentClass = getActualClass(arrayType.getGenericComponentType(), map);

            return buckets.stream().map(e -> {
                final Map<String, Object> map = new HashMap<>();
                map.put(ID, Base64.getUrlEncoder().encodeToString(e.getKeyAsString().getBytes(StandardCharsets.UTF_8)));
                map.put(KEY, e.getKeyAsString());
                map.put(COUNT, e.getDocCount());
                return map;
            }).collect(Collectors.toList());

    /**
     * Get the environment map.
     * @return The environment map.
     */
    protected Map<String, String> getEnvMap() {
        if (envMap != null) {
            return envMap;
        }
        return System.getenv();
    }

    /**
     * Set the environment map.
     * @param envMap The environment map.
     */
    public void setEnvMap(final Map<String, String> envMap) {

     * Determines if the given document data matches the configured match expression.
     *
     * @param map the document data as a map of field names to values
     * @return true if the document matches the expression, false otherwise
     */
    public boolean match(final Map<String, Object> map) {

        if (map == null || map.isEmpty() || matchExpression == null) {
            return false;
        }