Controls the activation of lazy constraints during the solution process. Levels refer to the way that constraints are handled by Gurobi. More information can be found here: http://www.gurobi.com/documentation/8.0/refman/lazy.html
public enum LazyConstraintLevel
Only activate a constraint if it violates a feasible solution. Does not necessarily mean that all violating constraints with level Moderate will be activated at the same time.
Default. Treat the constraint as a "regular" constraint.
Lazy constraints that cut off the root relaxation will be pulled into the model.
Pull all constraints that are violatede by a feasible solution into the model.