Preconditions.checkNotNull(domNode);
// Initialize clique set.
clearCliques();
DocumentNode docNode = new DocumentNode();
ArrayList<GraphNode> cliqueNodes = Lists.newArrayList();
cliqueNodes.add(docNode);
String paramId = XMLTools.getAttributeValueOrThrowException(domNode, "id",
"Error: A potential attribute must be specified in order to generate a clique set!");