if(issue.getData().length>0){
final String linkText = issue.getData()[0];
if (prefixes.isKnownPrefix(linkText)){
final List<String> uris=prefixes.getUris(linkText);
for (final String uri : uris) {
acceptor.accept(issue, "add prefix "+linkText, "adds prefix "+linkText+"with namespace URI\n"+uri, null, new ISemanticModification() {
public void apply(EObject element, IModificationContext context)
throws Exception {
DirectiveBlock block = (DirectiveBlock)EcoreUtil2.getRootContainer(element);
PrefixId id = XturtleFactory.eINSTANCE.createPrefixId();