code: protected void destroyConnection(ThriftConnectionHandle<T> conn) {
  		postDestroyConnection(conn);
  		try {
  			conn.internalClose();
  		} catch (ThriftConnectionPoolException e) {
  			logger.error("Error in attempting to close connection", e);
  		}
  	}
docs: 销毁连接的方法
  
  @param conn
  需要销毁的连接代理对象