docs: public synchronized boolean unlockAll(SessionInfo sessionInfo)
      {
          Utility.getLogger().info("Unlock all, Session: " + sessionInfo.m_iSessionID);
          for (Object bookmark : this.keySet())
          {
              SessionInfo thisSession = (SessionInfo)this.get(bookmark);
              if (sessionInfo.equals(thisSession))
                  this.removeLock(bookmark, thisSession);            
          }
          return true;
      }