}

    @Test
    public void test_addField() throws Exception {
        indexQueryItems();

        PopularWordsResponse response = suggester.popularWords().setSize(10).addField("content").execute().getResponse();

        assertNotNull(response);
        assertTrue(response.getTotal() > 0);
    }

    @Test
    public void test_addLanguage() throws Exception {

        // No system properties set - should pass without checking

        final File anyFile = new File(tempDir.toFile(), "any/test.txt");
        anyFile.getParentFile().mkdirs();
        anyFile.createNewFile();

        // Should not throw when no allowed paths are configured
        action.validateFilePath(anyFile.getAbsolutePath());
    }

    }

    /**
     * Adds a field to filter by.
     * @param field The field name.
     * @return This builder instance.
     */
    public PopularWordsRequestBuilder addField(final String field) {
        request.addField(field);
        return this;
    }

    /**
     * Adds a language to filter by.
     * @param lang The language.
     * @return This builder instance.
     */

        return this;
    }

    /**
     * Adds a field to filter by.
     * @param field The field name.
     * @return This builder instance.
     */
    public SuggestRequestBuilder addField(final String field) {
        request.addField(field);
        return this;
    }

    /**
     * Adds a kind to filter by.
     * @param kind The kind.
     * @return This builder instance.
     */

In the examples we use a `MSS` type, which is a `map[string]string` that is `msgp` serializable.

```go
    handler := func(request *grid.MSS) (*grid.MSS, *grid.RemoteErr) {
        fmt.Println("Got request with field", request["myfield"])
        // Do something with payload
        return NewMSSWith(map[string]string{"result": "ok"}), nil
    }

    // Create a typed handler.

	}

	type EmbeddedPtrStruct struct {
		EmbeddedPtrIntField   int
		*NestedEmbeddedStruct `gorm:"embedded"`
	}

	type Result struct {
		BoolField          bool
		IntField           int
		Int8Field          int8
		Int16Field         int16
		Int32Field         int32
		Int64Field         int64
		UIntField          uint
		UInt8Field         uint8
		UInt16Field        uint16

    @Override
    public Long getVersionNo() {
        return asDocMeta().version();
    }

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

    public void addField(final String key, final Object value) {
        fields.put(key, value);
    }

    public String getLogMessage() {
        return getUrl();
    }

    @Override
    public Map<String, Object> toSource() {

    }

    public String getLogMessage() {
        return getId();
    }

    public LocalDateTime getRequestedAt() {
        return getUpdatedAt();
    }

    public void addField(final String key, final Object value) {
        fields.put(key, value);
    }

    @Override
    public Map<String, Object> toSource() {
        final Map<String, Object> sourceMap = super.toSource();

        return searchFieldLogList;
    }

    public List<Pair<String, String>> getRequestHeaderList() {
        return headerList;
    }

    public void addField(final String key, final Object value) {
        fields.put(key, value);
    }

    public String getLogMessage() {
        return getSearchWord();
    }

    @Override

    @Override
    public Long getVersionNo() {
        return asDocMeta().version();
    }

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

    public void addField(final String key, final Object value) {
        fields.put(key, value);
    }

    public String getLogMessage() {
        return getUrl();
    }

    public LocalDateTime getRequestedAt() {