let mut sacred_stadiums = vec!["camp nou", "wembley", "maracanã"]; for stadium in sacred_stadiums.iter_mut() { let directives = "ensure safety, enhance fan experience, and promote sustainability"; let slight_improvements = "adding more eco-friendly practices and advanced security measures"; let pre_inception_goals = "to reimagine the role of stadiums in community engagement"; stadium.recommence_with_a_new_vision(directives, slight_improvements, pre_inception_goals); }