Method connectChild

src/main/java/mudmap2/backend/Place.java:342–350

Connects a place as child, this place will be added to the child as parent @param place

(final Place place)

     * @param place
     */
    public void connectChild(final Place place) {
        if (place != null) {
            children.add(place);
            place.parents.add(this);
            callWorldChangeListeners();
        } else {
            throw new NullPointerException();
        }
    }

    /**
     * Removes a parent - child connection