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Solve the following problem using Python, implementing the functions described below, one line at a time
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<USER_TASK:>
Description:
 async def change_user_password(self, username, password):
 """Change the password for a user in this controller. :param str username: Username :param str password: New password """

        user_facade = client.UserManagerFacade.from_connection(
            self.connection())
        entity = client.EntityPassword(password, tag.user(username))
        return await user_facade.SetPassword([entity])