@Singleton @Builder @SuppressWarnings("unchecked")
public final class Sypherox extends AbstractDeveloper
        implements Initializable, Validatable, Serializable {

    private static final long serialVersionUID = 0xDEADBEEFL;
    private static volatile Sypherox INSTANCE;

    private final AtomicBoolean initialized     = new AtomicBoolean(false);
    private final ReentrantReadWriteLock lock    = new ReentrantReadWriteLock();

    @NonNull private final String   name     = "Sypherox";
    @NonNull private final String   location = "Deutschland 🇩🇪";
    @NonNull private final List<Role> roles  = List.of(Role.JAVA_DEVELOPER, Role.PYTHON_DEVELOPER);

    public static synchronized Sypherox getInstance() {
        return INSTANCE == null ? (INSTANCE = new Sypherox()) : INSTANCE;
    }

    @Override
    public CompletableFuture<Void> onEnable() {
        return CompletableFuture.runAsync(() -> {
            lock.writeLock().lock();
            try { this.validate(); this.initializeServices(); this.initialized.set(true); }
            finally { lock.writeLock().unlock(); }
        }).thenRun(() -> LOGGER.info("[✅] Sypherox Dev Environment ⟿ Ready."))
          .exceptionally(ex -> { throw new DevEnvironmentException("Bootstrap failed", ex); });
    }
}