Lazy loading supplier

UserWithSupplier.java

public class User {
    private long id;
    private String name;
    private Supplier<List<Wallet>> wallets;
  
    public void setWallets(Supplier<List<Wallet>> wallets) {
        this.wallets = wallets;
    }

    public List<Wallet> getWallets() {
        return wallets.get();
    }
}