code: def slugify(self, value):
          '''
          Apply slugification according to specified field rules
          '''
          if value is None:
              return
  
          return slugify.slugify(value, max_length=self.max_length,
                                 separator=self.separator,
                                 to_lower=self.lower_casef slugify(self, value):
          '''
          Apply slugification according to specified field rules
          '''
          if value is None:
              return
  
          return slugify.slugify(value, max_length=self.max_length,
                                 separator=self.separator,
                                 to_lower=self.lower_case)
docs: Apply slugification according to specified field rules