docs: def create_translation_tasks(self, instance):
          """
          Creates the translations tasks from the instance and its translatable children
  
          :param instance:
          :return:
          """
  
          langs = self.get_languages()
  
          result = []
          # get the previous and actual values
          # in case it's and "add" operation previous values will be empty
          previous_values, actual_values = self.get_previous_and_current_values(instance)
  
          # extract the differences
          differences = self.extract_diferences(previous_values, actual_values)
          self.log('\nprev: {}\nactu:{}\ndiff:{}'.format(previous_values, actual_values, differences))
          if len(differences) > 0:
              # there are differences in the main model, so we create the tasks for it
              result += self.create_from_item(langs, instance.master, differences, trans_instance=self.instance)
          else:
              # no differences so we do nothing to the main model
              self.log('No differences we do nothing CREATE {}:{}'.format(self.master_class, instance.language_code))
          return result