///usr/bin/env jbang "$0" "$@" ; exit $?

//JAVA 25+

import java.util.concurrent.*;

/// Proof: scoped-values

/// Source: content/concurrency/scoped-values.yaml

record User(String name) {}

record Request(String path) {}

class Handler {

static final ScopedValue<User> CURRENT =

ScopedValue.newInstance();

User authenticate(Request req) {

return new User("Alice");

}

void handle(Request req) {

ScopedValue.where(CURRENT,

authenticate(req)

).run(this::process);

}

void process() {

// use CURRENT.get() in scope

}

}

void main() {

new Handler().handle(new Request("/"));

}