import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.stream.StreamUtil;
import org.codelibs.fess.Constants;
import org.dbflute.optional.OptionalThing;

public class FieldConfigs {

    private final Map<String, String> params;

    public FieldConfigs(final Map<String, String> params) {
        this.params = params;
    }

    public OptionalThing<Config> getConfig(final String fieldName) {

    }

    default Map<String, Object> processFieldConfigs(final Map<String, Object> dataMap, final FieldConfigs fieldConfigs) {
        final Map<String, Object> newDataMap = new LinkedHashMap<>();
        for (final Map.Entry<String, Object> e : dataMap.entrySet()) {
            if (fieldConfigs.getConfig(e.getKey()).map(FieldConfigs.Config::isOverwrite).orElse(false)

        String url = responseData.getUrl();
        final String indexingTarget = crawlingConfig.getIndexingTarget(url);
        url = pathMappingHelper.replaceUrl(sessionId, url);

        final FieldConfigs fieldConfigs = new FieldConfigs(crawlingConfig.getConfigParameterMap(ConfigName.FIELD));

        String urlEncoding;
        final UrlQueue<?> urlQueue = CrawlingParameterUtil.getUrlQueue();

        url = pathMappingHelper.replaceUrl(sessionId, url);
        final String mimeType = responseData.getMimeType();

        final FieldConfigs fieldConfigs = new FieldConfigs(crawlingConfig.getConfigParameterMap(ConfigName.FIELD));
        final Map<String, String> xpathConfigMap = crawlingConfig.getConfigParameterMap(ConfigName.XPATH);

        String urlEncoding;

        final FessXpathTransformer transformer = new FessXpathTransformer();
        final Map<String, String> params = Maps.of("foo", "cache", "bar", "overwrite", "baz", "cache|overwrite");
        FieldConfigs fieldConfigs = new FieldConfigs(params);
        final Map<String, Object> dataMap = Map.of(//
                "foo", new String[] { "aaa", "bbb" }, //
                "bar", new String[] { "ccc", "ddd" }, //