Bouncer class for medium article

Bouncer.java

public class Bouncer {
    private final EntranceChecker entranceChecker;

    public Bouncer(EntranceChecker entranceChecker) {
        this.entranceChecker = entranceChecker;
    }

    public boolean shouldBlock(Person person) {
        return !entranceChecker.isInTheGuestList(person);
    }
}