short level = 1;
        queryPolicy = new MsrpcQueryInformationPolicy(mockPolicyHandle, level, mockNdrObject);

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

        // Assert
        assertEquals(0x07, opnum); // Expected opnum for LsarQueryInformationPolicy
    }

    @Test
    void multipleInstances_shouldBeIndependent() {
        // Arrange
        short level1 = 1;

    protected int returnCode = ERROR_SUCCESS;
    private int opnum;

    /**
     * Creates a new witness RPC message with the specified operation number.
     *
     * @param opnum the operation number for this message
     */
    protected WitnessRpcMessage(int opnum) {
        ptype = 0; // REQUEST
        flags = DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG;
        this.opnum = opnum;
    }

    @Override
    public int getOpnum() {

    }

    @Test
    @DisplayName("Should have correct opnum from parent class")
    void shouldHaveCorrectOpnum() {
        // When
        MsrpcSamrConnect2 msrpcSamrConnect2 = new MsrpcSamrConnect2(testServer, testAccess, mockPolicyHandle);

        // Then
        assertEquals(0x39, msrpcSamrConnect2.getOpnum(), "Should have opnum 0x39 from parent class");
    }

    @Test