}

    // Test getAsString with String value
    public void test_getAsStringWithStringValue() {
        dataStoreParams.put("stringKey", "stringValue");
        assertEquals("stringValue", dataStoreParams.getAsString("stringKey"));
    }

    // Test getAsString with non-String value
    public void test_getAsStringWithNonStringValue() {
        dataStoreParams.put("intKey", 123);

    public void test_append_stringValue() {
        StringBuilder buf = new StringBuilder();
        Supplier<Object> supplier = () -> "test string";

        monitorTarget.append(buf, "stringKey", supplier);
        assertEquals("\"stringKey\":\"test string\"", buf.toString());
    }

    // Test append method with String containing special characters
    public void test_append_stringWithSpecialChars() {