code: def build_default_link(self):
          '''Called when 'link' is not defined in the settings'''
          attrs = {}
          attrs["rel"] = "stylesheet"
          attrs["href"] ="{}?{:x}".format(
              os.path.join(settings.STATIC_URL, self.filepath).replace(os.path.sep, '/'),
              self.version_id,
          )
          attrs.update(self.options['link_attrs'])
          attrs["data-context"] = self.provider_run.uid       # can't be overridden
          return '<link{} />'.format(flatatt(attrs)f build_default_link(self):
          '''Called when 'link' is not defined in the settings'''
          attrs = {}
          attrs["rel"] = "stylesheet"
          attrs["href"] ="{}?{:x}".format(
              os.path.join(settings.STATIC_URL, self.filepath).replace(os.path.sep, '/'),
              self.version_id,
          )
          attrs.update(self.options['link_attrs'])
          attrs["data-context"] = self.provider_run.uid       # can't be overridden
          return '<link{} />'.format(flatatt(attrs))
docs: Called when 'link' is not defined in the settings