- Define the classes ``` TestCase << #RefactoredDepthCalculatorVisitorTest slots: {}; package: 'Champollion2' ``` ``` TestCase << #Refactored2DepthCalculatorVisitorTest slots: {}; package: 'Champollion2' ``` - select RefactoredDepthCalculatorVisitorTest and duplicate class and enter Refactored2DepthCalculatorVisitorTest - you get  