if (uidNumber != null) {
            addFieldToSource(sourceMap, "uidNumber", uidNumber);
        }
        if (x121Address != null) {
            addFieldToSource(sourceMap, "x121Address", x121Address);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {
        sourceMap.put(field, value);
    }

        Map<String, Object> sourceMap = new HashMap<>();
        if (accessType != null) {
            addFieldToSource(sourceMap, "accessType", accessType);
        }
        if (clientIp != null) {
            addFieldToSource(sourceMap, "clientIp", clientIp);
        }
        if (hitCount != null) {
            addFieldToSource(sourceMap, "hitCount", hitCount);
        }

        Map<String, Object> sourceMap = new HashMap<>();
        if (available != null) {
            addFieldToSource(sourceMap, "available", available);
        }
        if (boost != null) {
            addFieldToSource(sourceMap, "boost", boost);
        }
        if (configParameter != null) {
            addFieldToSource(sourceMap, "configParameter", configParameter);
        }

            addFieldToSource(sourceMap, "updatedBy", updatedBy);
        }
        if (updatedTime != null) {
            addFieldToSource(sourceMap, "updatedTime", updatedTime);
        }
        if (virtualHosts != null) {
            addFieldToSource(sourceMap, "virtualHosts", virtualHosts);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {

            addFieldToSource(sourceMap, "updatedBy", updatedBy);
        }
        if (updatedTime != null) {
            addFieldToSource(sourceMap, "updatedTime", updatedTime);
        }
        if (virtualHosts != null) {
            addFieldToSource(sourceMap, "virtualHosts", virtualHosts);
        }
        return sourceMap;
    }

    protected void addFieldToSource(Map<String, Object> sourceMap, String field, Object value) {

        Map<String, Object> sourceMap = new HashMap<>();
        sourceMap.put("string", "test");
        sourceMap.put("integer", 42);
        sourceMap.put("long", 100L);
        sourceMap.put("double", 3.14);
        sourceMap.put("boolean", false);
        sourceMap.put("null_value", null);
        sourceMap.put("nested", nestedMap);

        event.setSourceMap(sourceMap);

        DocMap docMap = new DocMap(parentMap);

        Map<String, Object> sourceMap = new HashMap<>();
        sourceMap.put("key1", "value1");
        sourceMap.put("key2", "value2");
        sourceMap.put("key3", "value3");

        docMap.putAll(sourceMap);

        assertEquals(3, docMap.size());
        assertEquals("value1", docMap.get("key1"));

  public static final String SET_COOKIE2 = "Set-Cookie2";

  /**
   * The HTTP <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/SourceMap">{@code
   * SourceMap}</a> header field name.
   *
   * @since 27.1
   */
  public static final String SOURCE_MAP = "SourceMap";

  /**
   * The HTTP <a href="https://github.com/WICG/nav-speculation/blob/main/opt-in.md">{@code

     *
     * @param sourceMap The source map containing the date field.
     * @param name The name of the date field.
     * @return The Date object, or null if the field doesn't contain a valid date.
     */
    protected Date getDateFromSource(final Map<String, Object> sourceMap, final String name) {
        final Object obj = sourceMap.get(name);
        if (obj instanceof Date) {