The post's content in HTML format.

def content(self):
        """The post's content in HTML format."""
        content_list = wrap_list(self._content_preprocessed)
        content_list.extend(self._content_stash)
        content_to_render = '\n'.join(content_list)
        return typogrify(self.content_renderer.render(content_to_render, self.format))