code: def get_services_with_resources(cls, request=None):
          
          from django.apps import apps
  
          data = {}
          for service in cls._registry.values():
              service_model = apps.get_model(service['model_name'])
              service_project_link = service_model.projects.through
              service_project_link_url = reverse(cls.get_list_view_for_model(service_project_link), request=request)
  
              data[service['name']] = {
                  'url': reverse(service['list_view'], request=request),
                  'service_project_link_url': service_project_link_url,
                  'resources': {resource['name']: reverse(resource['list_view'], request=request)
                                for resource in service['resources'].values()},
                  'properties': {resource['name']: reverse(resource['list_view'], request=request)
                                 for resource in service.get('properties', {}).values()},
                  'is_public_service': cls.is_public_service(service_model)
              }
          return data
docs: Get a list of services and resources endpoints.
              {
                  ...
                  "GitLab": {
                      "url": "/api/gitlab/",
                      "service_project_link_url": "/api/gitlab-service-project-link/",
                      "resources": {
                          "Project": "/api/gitlab-projects/",
                          "Group": "/api/gitlab-groups/"
                      }
                  },
                  ...
              }