def __init__(self, label):
     AbstractConstraint.__init__(self, label)
    def __init__(self, label):
        """

        :param label: A label for the constraint
        """
        AbstractConstraint.__init__(self, label)
 def __init__(self, label):
     """
     :param label: A label for the constraint
     """
     AbstractConstraint.__init__(self, label)
 def __init__(self, label):
     AbstractConstraint.__init__(self, label)