* Method createXMLPlanNested.
* @return MappingNode root of mapping doc
*/
private static MappingNode createXMLPlanMultipleDocs() {
MappingDocument doc = new MappingDocument(true);
MappingElement root = doc.addChildElement(new MappingElement("Item")); //$NON-NLS-1$
root.setSource("xmltest.group.items"); //$NON-NLS-1$
root.setMaxOccurrs(-1);
root.addAttribute(new MappingAttribute("ItemID", "xmltest.group.items.itemNum")); //$NON-NLS-1$ //$NON-NLS-2$
MappingSequenceNode sequence1 = root.addSequenceNode(new MappingSequenceNode());