Dynamo.Graph.Workspaces.WorkspaceModel.DeleteModel C# (CSharp) Метод

        public void DeleteModel(XmlElement modelData)
        {
            //When there is a Redo operation, model is removed from
            //the workspace but the model is "not disposed" from memory.
            //Identified this when redo operation is performed on groups
            ModelBase model = GetModelForElement(modelData);

            if (model is NoteModel)
            {
                var note = model as NoteModel;
                RemoveNote(note);
                note.Dispose();
            }
            else if (model is AnnotationModel)
            {
                RemoveGroup(model);
            }
            else if (model is PresetModel)
            {
                RemovePreset(model as PresetModel);
            }
            else if (model is ConnectorModel)
            {
                var connector = model as ConnectorModel;
                connector.Delete();
            }
            else if (model is NodeModel)
            {
                RemoveAndDisposeNode(model as NodeModel);
            }
            else
            {
                // If it gets here we obviously need to handle it.
                throw new InvalidOperationException(string.Format(
                    "Unhandled type: {0}", model.GetType()));
            }
        }