Method add

forge-gui-mobile/src/forge/toolbox/FContainer.java:15–18

(T child)

    private final List<FDisplayObject> children = new ArrayList<>();

    public <T extends FDisplayObject> T add(T child) {
        children.add(child);
        return child;
    }

    public <T extends FDisplayObject> boolean remove(T child) {
        return children.remove(child);