/** @since 2.3 */
protected void validateReferencedMetamodel(ReferencedMetamodel ref) {
if (ref.getEPackage() != null && !ref.getEPackage().eIsProxy()) return;
EReference eref = XtextPackage.Literals.ABSTRACT_METAMODEL_DECLARATION__EPACKAGE;
List<INode> nodes = NodeModelUtils.findNodesForFeature(ref, eref);
String refName = nodes.isEmpty() ? "(unknown)" : NodeModelUtils.getTokenText(nodes.get(0));
String grammarName = GrammarUtil.getGrammar(ref).getName();
String msg = "The EPackage " + refName + " in grammar " + grammarName + " could not be found. ";
msg += "You might want to register that EPackage in your workflow file.";
throw new IllegalStateException(msg);
}
private String textOf(EObject object) {
return NodeModelUtils.getTokenText(NodeModelUtils.getNode(object));
}