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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 extra_create_kwargs(self):
 """ Inject the domain of the current user in the new model instances. """

        user = self.get_agnocomplete_context()
        if user:
            _, domain = user.email.split('@')
            return {
                'domain': domain
            }
        return {}