
  add_fairness - Adds a fairness constraint to the model
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   add_fairness [-h] | fair-expression
   
   Adds a new fairness constraint to the existing list of fairness
   constraints. fair-expression is evaluated and added to the current
   list of fairness constraints. This command has the same effect of a
   FAIRNESS statement in the original input file. Before executing this
   command you have to execute the dump_model command.
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   Last updated on 990119 20h08
