code: def get_classification(self):
          
          classification_dictionary = {}
          for item in self.classification:
              classification_dictionary[item['value']] = item['name']
  
          classification_dictionary = OrderedDict(
              sorted(classification_dictionary.items()))
  
          return classification_dictionary
docs: Get all hazard class created by user.
  
          :return: Hazard class definition created by user.
          :rtype: OrderedDict