import org.opensearch.action.admin.indices.refresh.RefreshResponse;
import org.opensearch.action.search.SearchResponse;
import org.opensearch.cluster.metadata.AliasMetadata;
import org.opensearch.common.xcontent.XContentType;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;
import org.opensearch.transport.client.Client;

/**

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.suggest.constants.FieldNames;
import org.codelibs.fess.suggest.constants.SuggestConstants;
import org.codelibs.fess.suggest.util.SuggestUtil;
import org.opensearch.common.Nullable;

/**
 * The SuggestItem class represents an item used for suggestions in the Fess search engine.
 * It contains various attributes such as text, readings, fields, tags, roles, languages, kinds, and frequencies.

    protected Pattern invalidUrlPattern = Pattern.compile("^\\s*javascript:|" //
            + "^\\s*mailto:|" //
            + "^\\s*irc:|" //
            + "^\\s*skype:|" //
            + "^\\s*about:|" + "^\\s*fscommand:|" //
            + "^\\s*aim:|" //
            + "^\\s*msnim:|" //
            + "^\\s*news:|" //
            + "^\\s*tel:|" //
            + "^\\s*unsaved:|" //
            + "^\\s*data:|" //