text: from ._base import ServicePageHandler, ServiceFormHandler
  from anthill.framework.handlers.edit import FormMixin, ProcessFormMixin
  
  
  class ConfigPageHandler(ServicePageHandler):
      service_name = 'config'
  
  
  class ConfigFormHandler(FormMixin, ProcessFormMixin, ConfigPageHandler):
      pass
  
  
  class IndexHandler(ConfigPageHandler):
      page_name = 'index'
  
      async def get_context_data(self, **kwargs):
          context = await super().get_context_data(**kwargs)
          context['configs_list'] = []  # TODO:
          return context
  