class OpnumTests {

        @Test
        @DisplayName("getOpnum should always return 0")
        void testGetOpnum() {
            // When
            int opnum = bind.getOpnum();

            // Then
            assertEquals(0, opnum, "Opnum should always be 0 for bind messages");
        }

        @Test
        @DisplayName("getOpnum should be consistent across multiple calls")

     * This operation releases resources associated with the handle.
     */
    public static class SamrCloseHandle extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x01;
        }

        /** The return value of the operation */
        public int retval;
        /** The handle to be closed */
        public rpc.policy_handle handle;

        /**

     * This operation releases resources associated with the handle.
     */
    public static class SamrCloseHandle extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x01;
        }

        /** The return value of the operation */
        public int retval;
        /** The handle to be closed */
        public rpc.policy_handle handle;

        /**

        }
    }

    /**
     * RPC message for enumerating all shares on a server.
     */
    public static class ShareEnumAll extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x0f;
        }

        /**
         * The return value of the operation.
         */
        public int retval;
        /**
         * The name of the server.

            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 {

        }
    }

    /**
     * RPC message for enumerating all shares on a server.
     */
    public static class ShareEnumAll extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x0f;
        }

        /**
         * The return value of the operation.
         */
        public int retval;
        /**
         * The name of the server.

            }
        }
    }

    /**
     * LSA close handle message.
     */
    public static class LsarClose extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x00;
        }

        /** Return value from the RPC call. */
        public int retval;
        /** Policy handle to be closed. */
        public rpc.policy_handle handle;

            assertEquals(DcerpcConstants.RPC_C_PF_BROADCAST, message.getFlags());
        }

        @Test
        @DisplayName("getOpnum should return correct operation number")
        void testGetOpnum() {
            assertEquals(10, message.getOpnum()); // TestDcerpcMessage was created with opnum 10
        }
    }

            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 {

            }
        }
    }

    /**
     * LSA close handle message.
     */
    public static class LsarClose extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x00;
        }

        /** Return value from the RPC call. */
        public int retval;
        /** Policy handle to be closed. */
        public rpc.policy_handle handle;