if (this.opened) {
            this.opened = false;
            final samr.SamrCloseHandle rpc = new MsrpcSamrCloseHandle(this);
            this.handle.sendrecv(rpc);
            if (rpc.retval != 0) {
                throw new SmbException(rpc.retval, false);
            }
        }
    }

        /** Domain NetBIOS name. */
        public rpc.unicode_string name;
        /** DNS domain name. */
        public rpc.unicode_string dns_domain;
        /** DNS forest name. */
        public rpc.unicode_string dns_forest;
        /** Domain GUID. */
        public rpc.uuid_t domain_guid;
        /** Domain security identifier. */
        public rpc.sid_t sid;

        @Override

        void testPolicyHandleEncode() throws NdrException {
            // Given: A policy handle with test values
            rpc.policy_handle policyHandle = new rpc.policy_handle();
            policyHandle.type = 123;
            policyHandle.uuid = new rpc.uuid_t();
            policyHandle.uuid.time_low = 0x11111111;
            policyHandle.uuid.time_mid = (short) 0x2222;

        this.handle = handle;
        if (server == null) {
            server = "\\\\";
        }
        final MsrpcLsarOpenPolicy2 rpc = new MsrpcLsarOpenPolicy2(server, access, this);
        handle.sendrecv(rpc);
        if (rpc.retval != 0) {
            throw new SmbException(rpc.retval, false);
        }
    }

    /**
     * Closes the LSA policy handle.
     *
     * @throws IOException if an I/O error occurs

        lsarpc.LsarDomainInfo domainInfo = new lsarpc.LsarDomainInfo();
        domainInfo.name = new rpc.unicode_string();
        domainInfo.name.length = 10;
        domainInfo.name.maximum_length = 20;
        domainInfo.name.buffer = new short[] { 'T', 'e', 's', 't', '1' };

        // Create a simple test SID
        domainInfo.sid = new rpc.sid_t();
        domainInfo.sid.revision = 1;

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Constructor with rpc.uuid_t should copy all fields correctly")
        void testConstructorWithRpcUuidT() {
            // Arrange
            rpc.uuid_t rpcUuid = new rpc.uuid_t();
            rpcUuid.time_low = TIME_LOW;
            rpcUuid.time_mid = TIME_MID;

        void testDecodeHeaderThrowsNdrExceptionForRpcVersion() {
            when(mockBuffer.dec_ndr_small()).thenReturn(4); // Incorrect RPC version
            assertThrows(NdrException.class, () -> message.decode_header(mockBuffer));
        }

        @Test
        @DisplayName("decode_header should throw NdrException for invalid minor RPC version")

        try (DcerpcHandle handle = getHandle(ctx, loc, address, "\\PIPE\\netdfs")) {
            final MsrpcDfsRootEnum rpc = new MsrpcDfsRootEnum(loc.getServer());
            handle.sendrecv(rpc);
            if (rpc.retval != 0) {
                throw new SmbException(rpc.retval, true);
            }
            return rpc.getEntries();
        }
    }

        assertNull(unicodeStringFalse.buffer, "Buffer should be null for empty string");
    }

    @Test
    void testConstructorWithRpcUnicodeStringAndZterm() {
        // Create a dummy rpc.unicode_string
        rpc.unicode_string dummyRus = new rpc.unicode_string();
        dummyRus.length = 10;
        dummyRus.maximum_length = 20;
        dummyRus.buffer = new short[] { 'H', 'e', 'l', 'l', 'o' };

        // Test with zterm = true

                "test-grp", "test-artifact", VersionRange.createFromVersion("1.0"), "type", null, "system", "provided");
        Artifact artifact2 = factory.createDependencyArtifact(
                "test-grp", "test-artifact-2", VersionRange.createFromVersion("1.0"), "type", null, "system", "test");
        Artifact artifact3 = factory.createDependencyArtifact(
                "test-grp",
                "test-artifact-3",