class documentation
        
        class ConstrainedSolutionsArchive(object):
Constructor: ConstrainedSolutionsArchive(aggregator)
Biobjective Pareto archive to store some Pareto optimal solutions for constrained optimization.
The user can define the aggregator for the constraints values which is by default the sum of the positive parts.
The Pareto archive is maintained in the archive attribute and the
Pareto optimal solutions can be recovered in archive.infos.