private ObjectGroupObjectData createObjectData(IntermediateNodeObject node)
                throws TikaException, IOException {
            ObjectGroupObjectData objectData = new ObjectGroupObjectData();

            objectData.cellIDArray = new CellIDArray(0, null);

            List<ExGuid> extendedGuidList = new ArrayList<ExGuid>();
            for (LeafNodeObject child : node.intermediateNodeObjectList) {
                extendedGuidList.add(child.exGuid);
            }

            objectData.objectExGUIDArray = new ExGUIDArray(extendedGuidList);
            objectData.data = new BinaryItem(node.serializeToByteList());

            return objectData;
        }
This method is used to create ObjectGroupObjectData instance from a root node object

@param node Specify the node object.
@return Return the ObjectGroupObjectData instance.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/onenote/fsshttpb/streamobj/ObjectGroupDataElementData.java