Change method call

src/Tree/Controllers/TreeController.cs

@@ -156,7 +156,7 @@ namespace Coscine.Api.Tree.Controllers
                 int metadataCount = 0;
                 foreach (var info in metadataInfos)
                 {
-                    var id = _coscineLDPHelper.GenerateId(resourceId, info.Key, true);
+                    var id = _coscineLDPHelper.GetId(resourceId, info.Key, true);
                     if (_rdfStoreConnector.HasGraph(id.AbsoluteUri))
                     {
                         var graph = _rdfStoreConnector.GetGraph(id);