lenient().doNothing().when(mockBuffer).enc_ndr_small(anyInt());
            lenient().doNothing().when(mockBuffer).setIndex(anyInt());

            message.encode(mockBuffer);

            // Verify key operations happened
            verify(mockBuffer).enc_ndr_small(5); // RPC version
            verify(mockBuffer).enc_ndr_long(0x00000010); // Little-endian / ASCII / IEEE

        assertEquals(1, response.getNum());
    }

    @Test
    public void test_setIndex() throws Exception {
        indexItems();

        SuggestResponse response = suggester.suggest().setIndex(suggester.getIndex()).setQuery("test").execute().getResponse();

        assertNotNull(response);
    }

    @Test
    public void test_setSize() throws Exception {
        indexItems();

    /**
     * Gets the OpenSearch index name.
     *
     * @return The index name.
     */
    public String getIndex() {
        return index;
    }

    /**
     * Sets the OpenSearch index name.
     *
     * @param index The index name.
     */
    public void setIndex(final String index) {
        this.index = index;
    }

    /**
     * Gets the scroll timeout in milliseconds.

    }

    /**
     * Creates a new PopularWordsRequestBuilder for querying popular words.
     * @return A PopularWordsRequestBuilder instance.
     */
    public PopularWordsRequestBuilder popularWords() {
        return new PopularWordsRequestBuilder(client).setIndex(getSearchAlias(index));
    }

    /**

        translatedSid.rid = 2;
        translatedSid.sid_index = 3;

        translatedSid.encode(mockNdrBuffer);

        verify(mockNdrBuffer).align(4);
        verify(mockNdrBuffer).enc_ndr_short(translatedSid.sid_type);
        verify(mockNdrBuffer).enc_ndr_long(translatedSid.rid);
        verify(mockNdrBuffer).enc_ndr_long(translatedSid.sid_index);
    }

    @Test

         * Gets the source index.
         *
         * @return the source index
         */
        public int getIndex() {
            return index;
        }

        /**
         * Sets the source index.
         *
         * @param index the source index
         */
        public void setIndex(final int index) {
            this.index = index;
        }

        /**
         * Gets the source title.

    private int queryFreqThreshold = 10;

    private final List<String> excludeWords = new ArrayList<>();

    /**
     * Sets the index name.
     * @param index The index name.
     */
    public void setIndex(final String index) {
        this.index = index;
    }

    /**
     * Sets the size of results.
     * @param size The size.
     */
    public void setSize(final int size) {
        this.size = size;

        m.ptype = 0; // request
        m.flags = 0x05;
        m.alloc_hint = 0;
        NdrBuffer buf = new NdrBuffer(new byte[1024], 0);
        m.encode(buf);
        // decode back
        buf.setIndex(0);
        m.decode_header(buf);
        assertEquals(0, m.ptype);
    }

    @Test
    void testDecodeHeaderInvalidVersion() {
        NdrBuffer buf = new NdrBuffer(new byte[10], 0);

			}
		case "Versions":
			z.Versions, err = dc.ReadBytes(z.Versions)
			if err != nil {
				err = msgp.WrapError(err, "Versions")
				return
			}
		case "SetIndex":
			z.SetIndex, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "SetIndex")
				return
			}
		case "PoolIndex":
			z.PoolIndex, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "PoolIndex")
				return
			}

				return
			}
		case "PoolIndex":
			z.PoolIndex, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "PoolIndex")
				return
			}
		case "SetIndex":
			z.SetIndex, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "SetIndex")
				return
			}
		case "DiskIndex":
			z.DiskIndex, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "DiskIndex")
				return
			}