[Pharo-project] Reducing the use of DependentFields

Hi DependentFields is a classVar in Object to make sure that an object can have dependent even if it does not inherit from Model. Cuis got this fixed and I would like to get the same. Now finding users of it is difficult. I found that MCWorkingCopies use a lot this behavior but I'm looking where exactly. So may be changing the superclass of MCPckageManager is the solution. Any ideas? Stef