RequestParameter param = new RequestParameter(null, values);

        String expected = "[null, [value1]]";
        assertEquals(expected, param.toString());
    }

    @Test
    public void test_toString_withNullValues() {
        // Test toString with null values
        String name = "testParam";
        RequestParameter param = new RequestParameter(name, null);

        String expected = "[testParam, null]";