RefactoringHints 
* are used to enable EmpiricalPatternDiscovery. 
* might come in the shape of a FixmeComment (REFACT). 
-- NiclasOlofsson

RefactoringHints can also take the form of a ToDoList, a list of things needing to be done:
* Established by knowing WhatIsRefactoring and by reading MartinFowler's book RefactoringImprovingTheDesignOfExistingCode

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CategoryRefactoring