text: from typing import no_type_check
  
  from django.utils.functional import LazyObject, empty
  from django.utils.module_loading import import_string
  
  
  class LazyStrImport(LazyObject):
      def __init__(self, import_str: str):
          self.__dict__["_import_str"] = import_str
          super(LazyStrImport, self).__init__()
  
      @no_type_check
      def _setup(self):
          if self._wrapped is empty:
              self._wrapped = import_string(self._import_str)
              return self._wrapped
          return self._wrapped
  
      @no_type_check
      def __call__(self, *args, **kwargs):
          if self._wrapped is empty:
              self._setup()
          return self._wrapped(*args, **kwargs)
  