TaskPriority.swift

func getUser() async throws -> User {
    try await Task.sleep(nanoseconds: 1_000_000)
    let task = Task(priority: .high) { () -> Address in
        try await Task.sleep(nanoseconds: 1_000_000)
        return Address(street: "FooStreet")
    }
    let address = try await task.value
    return User(name: "Max", address: address)
}

Task(priority: .medium) {
    let user = try await getUser()
    print(user.name)
    print(user.address ?? "No Street available")
}