An older license, called the Affero General Public License and
published by Affero, was designed to accomplish similar goals.  This is
a different license, not a version of the Affero GPL, but Affero has
released a new version of the Affero GPL which permits relicensing under
this license.

  The precise terms and conditions for copying, distribution and
modification follow.

                       TERMS AND CONDITIONS

     * @see java.lang.Object#finalize()
     */
    @Override
    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 () {

 * which contained the following notice:
 *
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 * Other contributors include Andrew Wright, Jeffrey Hayes,
 * Pat Fisher, Mike Judd.
 */

   APPENDIX: How to apply the Apache License to your work.

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      replaced with your own identifying information. (Don't include
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      To apply the Apache License to your work, attach the following
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      replaced with your own identifying information. (Don't include
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      replaced with your own identifying information. (Don't include
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     */
    @Override
    protected void finalize () throws Throwable {
        if ( !isDisconnected() && this.usageCount.get() != 0 ) {
            log.warn("Session was not properly released");
        }
    }


    /**
     * @return the number of known usages
     */
    protected long getUsageCount () {
        return this.usageCount.get();
    }