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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 get_all_children(self):
 """ Returns all children recursively """

        my_children = self.get_children_list()
        children = []
        children.extend(my_children)
        for child in my_children:
            children.extend(child.get_all_children())
        return children