text: import logging
  
  from django.apps import apps
  from django.db import models
  
  logger = logging.getLogger(name=__name__)
  
  
  class DocumentTypeSettingsManager(models.Manager):
      def get_by_natural_key(self, document_type_natural_key):
          DocumentType = apps.get_model(
              app_label='documents', model_name='DocumentType'
          )
          try:
              document_type = DocumentType.objects.get_by_natural_key(
                  document_type_natural_key
              )
          except DocumentType.DoesNotExist:
              raise self.model.DoesNotExist
  
          return self.get(document_type__pk=document_type.pk)
  