code: private Pool findOrCreatePool(String host, int port) {
  		String poolName = Utils.toKey(host, port);
  		Pool pool = PoolManager.find(poolName);
  		if (pool == null) {
  			poolFactory.reset();
  			poolFactory.addServer(host, port);
  			pool = poolFactory.create(poolName);
  		}
  
  		return pool;
  	}
docs: Looks for the existing pool with name poolFactory. If there is no such
  pool, creates new one.
  
  @param host
  - the concrete server's host
  @param port
  - the concrete server's port
  @return found or new pool for the specified parameters