Class Intercept

Abstract
Namespace: Baidu\Duer\Botsdk
Located at Intercept.php

Methods summary
`public mixed`	# `preprocess( Baidu\Duer\Botsdk\Bot $bot )` Parameters `$bot` Returns mixed 如果返回非null，跳过后面addHandler，addEventListener添加的回调
`public array`	# `postprocess( Baidu\Duer\Botsdk\Bot $bot, array $result )` Parameters `$bot` `$result` Returns array Desc 在调用response->build 之前统一对handler的输出结果进行修改