new_contents: from coffin.template import loader
  from django.template import response as django_response
  
  
  class SimpleTemplateResponse(django_response.SimpleTemplateResponse):
      def resolve_template(self, template):
          if isinstance(template, (list, tuple)):
              return loader.select_template(template)
          elif isinstance(template, basestring):
              return loader.get_template(template)
          else:
              return template
  
  class TemplateResponse(django_response.TemplateResponse,
          SimpleTemplateResponse):
      pass
  
subject: Implement a wrapper for the SimpleTemplateResponse and the TemplateResponse which use jinja2