# File lib/aws/dynamo_db/attribute_collection.rb, line 244
        def set attributes
          to_delete = []
          attributes = attributes.inject({}) do |attributes, (name, value)|
            if value == nil
              to_delete << name
            else
              attributes[name] = value
            end
            attributes
          end
          attribute_updates("PUT", attributes)
          delete(*to_delete)
        end