@Override
        public void run2() {
          removeTransactionsSentFromDepartedProxy(proxyServer);
          if (departedProxyServers != null) {
            departedProxyServers.remove(proxyServer);
          }
        }
@return the time-to-live for abandoned transactions, in seconds
geode-core/src/main/java/org/apache/geode/internal/cache/TXManagerImpl.java