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