class B():
    def __init__(self, aX):
        self._x = aX

    def setX(self, aX):
        wasSet = False
        self._x = aX
        wasSet = True
        return wasSet

    def getX(self):
        return self._x

    def delete(self):
        pass

    def __str__(self):
        return str(super()) + "[" + "x" + ":" + self.getX() + "]"

