# File lib/aws/simple_db/delete_attributes.rb, line 39
      def delete_attribute_values(attributes)
        opts = {
          :domain_name => item.domain.name,
          :item_name => item.name,
          :attributes => [],
          :expected => expect_condition_opts(attributes)
        }
        attributes.each do |name, values|
          if name != "if""if" && name != "unless""unless"
            [values].flatten.each do |value|
              attribute_value = { :name => name.to_s }
              attribute_value[:value] = value unless value == :all
              opts[:attributes] << attribute_value
            end
          end
        end
        opts.delete(:expected) if opts[:expected].empty?
        client.delete_attributes(opts)
      end