Merge "Add extraItems to dump log for BgDataModel" into main

        for (int i = 0; i < folders.size(); i++) {

            writer.println(prefix + '\t' + folders.valueAt(i).toString());

        }

        writer.println(prefix + " ---- extra items ");

        for (int i = 0; i < extraItems.size(); i++) {

            writer.println(prefix + '\t' + extraItems.valueAt(i).toString());

        }

        writer.println(prefix + " ---- items id map ");

        for (int i = 0; i < itemsIdMap.size(); i++) {

            writer.println(prefix + '\t' + itemsIdMap.valueAt(i).toString());

            this.containerId = containerId;

            this.items = Collections.unmodifiableList(items);

        }

        @Override

        @NonNull

        public final String toString() {

            StringBuilder s = new StringBuilder();

            s.append("FixedContainerItems:");

            s.append(" id=").append(containerId);

            s.append(" itemCount=").append(items.size());

            for (int i = 0; i < items.size(); i++) {

                s.append(" item #").append(i).append(": ").append(items.get(i).toString());

            }

            return s.toString();

        }

    }