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