// Binary check for individual flags
        assertEquals(0x03, queryPolicy.getFlags()); // 0x01 | 0x02 = 0x03
    }

    @Test
    void getOpnum_shouldReturnCorrectValue() {
        // Arrange
        short level = 1;
        queryPolicy = new MsrpcQueryInformationPolicy(mockPolicyHandle, level, mockNdrObject);

        // Act
        int opnum = queryPolicy.getOpnum();

        assertThrows(NullPointerException.class, () -> {
            new MsrpcLookupSids(mockPolicyHandle, testSids);
        });
    }

    @Test
    void getOpnum_shouldReturnCorrectValue() {
        // Arrange
        jcifs.SID mockSid = mock(jcifs.SID.class);
        when(mockSid.unwrap(sid_t.class)).thenReturn(mockSidT);
        testSids = new jcifs.SID[] { mockSid };