public static ModelNode AddContentEditorWebPart(this ModelNode model, ContentEditorWebPartDefinition definition, Action<ModelNode> action)
 {
     return model.AddDefinitionNode(definition, action);
 }
 public static ModelNode AddContentEditorWebPart(this ModelNode model, ContentEditorWebPartDefinition definition)
 {
     return AddContentEditorWebPart(model, definition, null);
 }