This function creates and returns a constraint (an instance of IloConstraint) for use in a model. The constraint insures that for the sets in the array vars, the intersection of vars[i] with vars[j] will be empty for all i and j when this constraint is satisfied.

In order for the constraint to take effect, you must add it to a model with the template IloAdd or the member function IloModel::add and extract the model for an algorithm with the member function IloAlgorithm::extract.