class Example():
    def __init__(self, aA, aB):
        self._a = aA
        self._b = aB

    def setA(self, aA):
        wasSet = False
        self._a = aA
        wasSet = True
        return wasSet

    def setB(self, aB):
        wasSet = False
        self._b = aB
        wasSet = True
        return wasSet

    def getA(self):
        return self._a

    def getB(self):
        return self._b

    def delete(self):
        pass

    def __str__(self):
        return str(super()) + "[" + "a" + ":" + self.getA() + "," + "b" + ":" + self.getB() + "]"

