Render template and send via API

Hi, I'm coding some new stuff in an integration I'm doing between Xenforo and Wordpress, in this case I'm using the RESTful API ([bd] API 1.2.1b)


The problem I have is that I need to render a template from XF and send the resulting HTML via the API, but I can't create a template renderer and I need a bit of help with this:

This is how I create a template renderer in a normal Controller:

class Route_To_Controller extends XenForo_FrontController {

public function whateva() {
        $controllerResponse = $this->dispatch($routeMatch);
        $controllerResponse = new XenForo_ControllerResponse_View(); 
        $controllerResponse->templateName = $template_name;
        $controllerResponse->viewName = $viewName;
        $controllerResponse->params = $viewParams;
        $containerParams = array('whatever' => 1);

        $viewRenderer = $this->_getViewRenderer('html');
        $html = $this->renderView($controllerResponse, $viewRenderer, $containerParams);
Now the API has this structure in the controllers

class bdApi_ControllerApi_Thread extends bdApi_ControllerApi_Abstract
And bdApi_ControllerApi_Abstract extends XenForo_ControllerPublic_Abstract

I think I can instantiate $controllerResponse = new XenForo_ControllerResponse_View(); but seems that I can't create $viewRenderer = $this->_getViewRenderer('html'); because that function simply doesn't exist.

My question is, how can I get the $viewRenderer or how can I get the template from this kind of controller?

Thank you.