old_contents: from django.http import Http404
  from django.shortcuts import get_object_or_404
  from django.shortcuts import redirect
  from django.views import generic
  
  
  class ComponentLibraryView(generic.base.TemplateView):
      template_name = 'meinberlin_contrib/component_library.html'
  
  
  class CanonicalURLDetailView(generic.DetailView):
      """DetailView redirecting to the canonical absolute url of an object."""
  
      def get(self, request, *args, **kwargs):
          self.object = self.get_object()
  
          # Redirect to the absolute url if it differs from the current path
          if hasattr(self.object, 'get_absolute_url'):
              absolute_url = self.object.get_absolute_url()
              if absolute_url != request.path:
                  return redirect(absolute_url)
  
          context = self.get_context_data(object=self.object)
          return self.render_to_response(context)
  
new_contents: from django.shortcuts import redirect
  from django.views import generic
  
  
  class ComponentLibraryView(generic.base.TemplateView):
      template_name = 'meinberlin_contrib/component_library.html'
  
  
  class CanonicalURLDetailView(generic.DetailView):
      """DetailView redirecting to the canonical absolute url of an object."""
  
      def get(self, request, *args, **kwargs):
          self.object = self.get_object()
  
          # Redirect to the absolute url if it differs from the current path
          if hasattr(self.object, 'get_absolute_url'):
              absolute_url = self.object.get_absolute_url()
              if absolute_url != request.path:
                  return redirect(absolute_url)
  
          context = self.get_context_data(object=self.object)
          return self.render_to_response(context)
  
subject: remove unused imports