@Nonnull
    @Override
    default MergedSubscriptionBuilder<T> expireAfter(long maxCalls) {
        Preconditions.checkArgument(maxCalls >= 1, "maxCalls < 1");
        return expireIf((handler, event) -> handler.getCallCounter() >= maxCalls, ExpiryTestStage.PRE, ExpiryTestStage.POST_HANDLE);
    }
Makes a MergedHandlerBuilder for a super event class

@param superClass   the abstract super event class
@param priority     the priority to listen at
@param eventClasses the event classes to be bound to
@param <S>          the super class type
@return a {@link MergedSubscriptionBuilder} to construct the event handler
helper/src/main/java/me/lucko/helper/event/functional/merged/MergedSubscriptionBuilder.java