protected boolean isTargetValue(final Object value) {
        if (value == null) {
            return !excludesNull;
        }
        if (value instanceof String && excludesWhitespace && ((String) value).trim().isEmpty()) {
            return !excludesWhitespace;
        }
        return true;
    }

    /**
     * コピー元のプロパティ名をコピー先となる{@literal Map}用のプロパティ名に変換して返します。
     *
     * @param srcPropertyName

        if (defaultRule) {
            return true;
        }

        final Map<String, Object> map = new HashMap<>();
        BeanUtil.copyBeanToMap(responseData, map, CopyOptions::excludeWhitespace);
        for (final Map.Entry<String, Pattern> entry : regexMap.entrySet()) {
            String value = "";
            final Object obj = map.get(entry.getKey());
            if (obj != null) {

import static org.codelibs.core.beans.util.CopyOptionsUtil.exclude;
import static org.codelibs.core.beans.util.CopyOptionsUtil.excludeNull;
import static org.codelibs.core.beans.util.CopyOptionsUtil.excludeWhitespace;
import static org.codelibs.core.beans.util.CopyOptionsUtil.include;
import static org.codelibs.core.beans.util.CopyOptionsUtil.prefix;
import static org.codelibs.core.collection.CollectionsUtil.newHashMap;

                    final OpenSearchAccessResult accessResult = BeanUtil.copyMapToNewBean(source, OpenSearchAccessResult.class, option -> {
                        option.converter(new EsTimestampConverter(), timestampFields).excludeWhitespace();
                        option.exclude(OpenSearchAccessResult.ACCESS_RESULT_DATA);
                    });
                    @SuppressWarnings("unchecked")

            final Map<String, Object> source = response.getSource();
            final T bean = BeanUtil.copyMapToNewBean(source, clazz, option -> {
                option.converter(new EsTimestampConverter(), timestampFields).excludeWhitespace();
                option.exclude(OpenSearchAccessResult.ACCESS_RESULT_DATA);
            });
            @SuppressWarnings("unchecked")