def all_constraints():
    return ConstraintHandler().get_all_classes()
Return all edges that are driver connections, i.e.,
dataset/ETHPy150Open openstack/nova-solver-scheduler/nova_solverscheduler/scheduler/solvers/constraints/__init__.py/all_constraints--crossover with--dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.main/src/openmdao/main/depgraph.py/list_driver_connections