protected void finalize () throws Throwable {
        if ( isConnected() && this.usageCount.get() != 0 ) {
            log.warn("Tree was not properly released");
        }
    }


    /**
     * 
     * @return whether the tree is connected
     */
    public boolean isConnected () {
        return this.tid != -1 && this.session.isConnected() && this.connectionState.get() == 2;
    }


    /**

            synchronized ( trans ) {
                try {
                    // ensure connected
                    trans.ensureConnected();
                    refServerName = trans.getRemoteHostName();
                }
                catch ( IOException e ) {
                    log.warn("Failed to connect to domain controller", e);
                }

import javax.servlet.ServletContext;
import javax.servlet.SessionTrackingMode;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.catalina.connector.ClientAbortException;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.text.StringEscapeUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

                    final String converted = URLEncoder.encode(target, Constants.UTF_8);
                    if (target.equals(converted)) {
                        encodedBuf.append(Base64.getUrlEncoder().encodeToString(target.getBytes(Constants.CHARSET_UTF_8)));
                    } else {
                        encodedBuf.append(converted);
                    }