@Nested
    @DisplayName("Unicode String Tests")
    class UnicodeStringTests {

        @Test
        @DisplayName("Should encode unicode string with null buffer correctly")
        void testUnicodeStringEncodeNullBuffer() throws NdrException {
            // Given: A unicode string with null buffer
            rpc.unicode_string unicodeString = new rpc.unicode_string();
            unicodeString.length = (short) 0;