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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def child_added(self, child):
 """ When a child is added, schedule a data changed notification """

        super(AndroidViewPager, self).child_added(child)
        self._notify_count += 1
        self.get_context().timed_call(
            self._notify_delay, self._notify_change)