<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_urls(self, **kwargs):
 """ Ensure the correct host by injecting the current site. """

        kwargs["site"] = Site.objects.get(id=current_site_id())
        return super(DisplayableSitemap, self).get_urls(**kwargs)