code: def prepare(cls):
          
          if cls._ask_openapi():
              napp_path = Path()
              tpl_path = SKEL_PATH / 'napp-structure/username/napp'
              OpenAPI(napp_path, tpl_path).render_template()
              print('Please, update your openapi.yml file.')
              sys.exit()
docs: Prepare NApp to be uploaded by creating openAPI skeleton.