@Nonnull
    public static <T extends PlayerLoginEvent> Predicate<T> ignoreDisallowedLogin() {
        return (Predicate<T>) IGNORE_DISALLOWED_LOGIN;
    }
Returns a predicate which only returns true if the login is allowed

@param <T> the event type
@return a predicate which only returns true if the login is allowed
helper/src/main/java/me/lucko/helper/event/filter/EventFilters.java