code: def get_context_data(self, **kwargs):
          
          context = super(CapabilityView, self).get_context_data(**kwargs)
          context.update({'protocol': PROTOCOL,
                          'copyright': COPYRIGHT,
                          'feeds_format': FEEDS_FORMAT,
                          'site': Site.objects.get_current()})
          return context
docs: Populate the context of the template
          with technical informations for building urls.