size=

# File lib/rss/image.rb, line 147
      def size=(new_value)
        if @do_validate and !new_value.nil?
          new_value = new_value.strip
          unless AVAILABLE_SIZES.include?(new_value)
            attr_name = "#{IMAGE_PREFIX}:size"
            raise NotAvailableValueError.new(full_name, new_value, attr_name)
          end
        end
        set_size(new_value)
      end