App::uses in CakePHP 3.8.0

I have CakePHP version 2.10.16 and I am trying to upgrade it to 3.8.0. In CakePHP 2, it has App::uses(), in CakePHP 3.8.0 it doesn’t have one. What should I use instead of it? The line that needs to be replaced is like this: App::uses('Debugger', 'Utility');