def child_added(self, child):
        super(Declarative, self).child_added(child)
        if isinstance(child, Declarative):
            if self.is_initialized and not child.is_initialized:
                child.initialize()

    #--------------------------------------------------------------------------
    # Private Framework API
    #--------------------------------------------------------------------------
Allows endpoint owner to delete subscription.
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/core/declarative.py/Declarative.child_added--crossover with--dataset/ETHPy150Open darcyliu/storyboard/boto/sns/connection.py/SNSConnection.unsubscribe