code: def horizontal_headers(self, value):
          
  
          if value is not None:
              assert type(value) is OrderedDict, "'{0}' attribute: '{1}' type is not 'OrderedDict'!".format(
                  "horizontal_headers", value)
          self.__horizontal_headers = value
docs: Setter for **self.__horizontal_headers** attribute.
  
          :param value: Attribute value.
          :type value: OrderedDict