Setting the content type when using a freemarker template has no effect.

When in the doBeforeRender the contentType is set and the template is a freemarker template.

Reproduced in the archetype, version 1.07.08 and 1.09.00.
To reproduce:
Create a component that does nothing else than
response.setContentType("application/xml");
in the doBeforeRender

Then build and start the project.

In the configuration make a sitemap item that uses this component.
Add a ftl template that the component uses containing a ftl script that contains xml.

Load the page in the web browser and check the content type.
Observed result: text/html
Expected result: application/xml