}
List<?> start(final String name, final String cloc, final String dcuri) {
if(nodes.containsKey(name))
return emptyList();
final Node node = dcuri != null? nf.createNode(dcuri, new Contribution(cloc, cloc)) : nf.createNode(new Contribution(cloc, cloc));
nodes.put(name, new Nodeconf(name, cloc, dcuri, node));
node.start();
return emptyList();
}