samr.SamrCloseHandle message = new samr.SamrCloseHandle(mockPolicyHandle);

            // Then: Should have correct opnum and handle
            assertEquals(0x01, message.getOpnum());
            assertEquals(mockPolicyHandle, message.handle);
        }

        @Test
        @DisplayName("Should encode input parameters correctly")
        void testEncodeIn() throws NdrException {

            samr.SamrCloseHandle message = new samr.SamrCloseHandle(mockPolicyHandle);

            // Then: Should have correct opnum and handle
            assertEquals(0x01, message.getOpnum());
            assertEquals(mockPolicyHandle, message.handle);
        }

        @Test
        @DisplayName("Should encode input parameters correctly")
        void testEncodeIn() throws NdrException {

        // Arrange
        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

    }

    @Test
    void testShareEnumAllGetOpnum() {
        srvsvc.ShareEnumAll enumAll = new srvsvc.ShareEnumAll(null, 0, null, 0, 0, 0);
        assertEquals(0x0f, enumAll.getOpnum());
    }

                    msg.encode_header(buf);
                    buf.enc_ndr_long(msg.alloc_hint);
                    buf.enc_ndr_short(0); /* context id */
                    buf.enc_ndr_short(msg.getOpnum());
                }

                doSendFragment(stub, off, msg.length, isDirect);
                off += n;
            }

            doReceiveFragment(stub, isDirect);
            buf.reset();

        testSids = new jcifs.SID[] { mockSid };
        lookupSids = new MsrpcLookupSids(mockPolicyHandle, testSids);

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

        // Assert
        assertEquals(0x0f, opnum);
    }

    @Test
    void constructor_shouldPreservePolicyHandleReference() throws Exception {
        // Arrange

                buf.reset();
                msg.encode_header(buf);
                buf.enc_ndr_long(msg.alloc_hint);
                buf.enc_ndr_short(0); /* context id */
                buf.enc_ndr_short(msg.getOpnum());
            }

            if ((msg.flags & DCERPC_LAST_FRAG) == DCERPC_LAST_FRAG) {
                return off;
            }
            // all fragment but the last get written using read/write semantics

        });
    }

    @Test
    void testInheritedFields() throws Exception {
        // Verify inherited fields are properly set
        assertEquals(0x10, msrpcShareGetInfo.getOpnum());

        // Test that the info field is properly initialized
        Field infoField = msrpcShareGetInfo.getClass().getSuperclass().getDeclaredField("info");
        infoField.setAccessible(true);

        assertEquals(prefmaxlen, enumEx.prefmaxlen);
        assertEquals(info, enumEx.info);
        assertEquals(totalentries, enumEx.totalentries);
        assertEquals(0x15, enumEx.getOpnum());
    }

    @Test
    void testNetrDfsEnumEx_EncodeInDecodeOut() throws NdrException {
        String dfsName = "test_dfs";
        int level = 1;
        int prefmaxlen = 100;

            stream(parameter.getSuggestFields()).of(stream -> stream.forEach(builder::addField));
            roleQueryHelper.build(SearchRequestType.SUGGEST).stream().forEach(builder::addRole);
            builder.setSize(parameter.getNum());
            stream(langs).of(stream -> stream.forEach(builder::addLang));

            stream(parameter.getTags()).of(stream -> stream.forEach(builder::addTag));