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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 add_proxy_for(self, name, widget):
 """Create a proxy for a widget and add it to this group :param name: The name or key of the proxy, which will be emitted with the changed signal :param widget: The widget to create a proxy for """

        proxy = proxy_for(widget)
        self.add_proxy(name, proxy)