fn main() {
    // Example usage
    let lamp_topology = LampTopology {};
    let k8s_score = K8sScore {};
    let docker_topology = DockerTopology{};
    
    // Type-safe execution
    let maestro = Maestro::new(Box::new(docker_topology));
    maestro.execute(&k8s_score); // This will work
    
    // This would fail at compile time if we tried:
    // let dummy_topology = DummyTopology {};
    // let maestro = Maestro::new(Box::new(dummy_topology));
    // maestro.execute(&k8s_score); // Error: expected LampTopology, found DummyTopology
}

// Base trait for all topologies
trait Topology {
    // Common topology methods could go here
    fn topology_type(&self) -> &str;
}

struct DummyTopology {}
impl Topology for DummyTopology {
    fn topology_type(&self) -> &str { "Dummy" }
}

struct LampTopology {}
impl Topology for LampTopology {
    fn topology_type(&self) -> &str { "LAMP" }
}

struct  DockerTopology {}

impl Topology for DockerTopology {
    fn topology_type(&self) -> &str {
        todo!("DockerTopology")
    }
}

// The Score trait with an associated type for the required topology
trait Score {
    type RequiredTopology: Topology + ?Sized;
    fn execute(&self, topology: &Self::RequiredTopology);
    fn score_type(&self) -> &str;
}

// A score that requires LampTopology
struct K8sScore {}
impl Score for K8sScore {
    type RequiredTopology = DockerTopology;
    
    fn execute(&self, topology: &Self::RequiredTopology) {
        println!("Executing K8sScore on {} topology", topology.topology_type());
        // Implementation details...
    }
    
    fn score_type(&self) -> &str { "K8s" }
}

// A generic maestro that can work with any topology type
struct Maestro<T: Topology + ?Sized> {
    topology: Box<T>,
}

impl<T: Topology + ?Sized> Maestro<T> {
    pub fn new(topology: Box<T>) -> Self {
        Maestro { topology }
    }
    
    // Execute a score that requires this specific topology type
    pub fn execute<S: Score<RequiredTopology = T>>(&self, score: &S) {
        println!("Maestro executing {} score", score.score_type());
        score.execute(&*self.topology);
    }
}