# File lib/s3/right_s3.rb, line 389
      def self.add_meta_prefix(meta_headers, prefix=S3Interface::AMAZON_METADATA_PREFIX)
        meta = {}
        meta_headers.each do |meta_header, value|
          if meta_header[/#{prefix}/]
            meta[meta_header] = value
          else
            meta["#{S3Interface::AMAZON_METADATA_PREFIX}#{meta_header}"] = value
          end
        end
        meta
      end