Why I can't find "IsNullorEmpty"?

I want to use “IsNullorEmpty” but I can’t find it out.
How can I get one??

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You have to use this method like this.


This method is used to check whether String is null or Empty.

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Thank you for your reply. I can use “IsNullorEmpty” method.
I use like below when I use old version of Uipath.

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