}

    /**
     * Sets whether to extract top-level fields as metadata.
     *
     * @param extractMetadata true to extract metadata
     */
    public void setExtractMetadata(final boolean extractMetadata) {
        this.extractMetadata = extractMetadata;
    }

    /**
     * Sets the separator for nested keys.
     *
     * @param nestedKeySeparator the nested key separator