A proven practice for handling the identification of logon data type is to use nested if statements which will check for Trusted Credentials, Credentials, Forms and finally for SSO.

对于识别登录数据类型，一种已经证明有效的做法是使用嵌套的IF语句检查可信凭证、凭证和表单，最后检查sso。

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With that being stated it becomes reasonable to change part of the logic of that code snippet and change the structure of the IF statements from sequence to nested.

根据上面的分析，合理的方法应该是修改代码片段的部分逻辑，把IF语句的结构由顺序改为嵌套。

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Using such a statement can sometimes be a better route than nested for loops or if statements to cut down on repetitive code or just for better structure.

有时候，使用这种语句比嵌套的for循环或if语句更好，可以减少重复的代码而且结构更清楚。

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