# File lib/aws/iam/signing_certificate_collection.rb, line 62
      def upload certificate_body

        options = {}
        options[:certificate_body] = certificate_body
        options[:user_name] = user.name if user

        resp = client.upload_signing_certificate(options)

        SigningCertificate.new_from(:upload_signing_certificate, 
          resp.certificate, resp.certificate.certificate_id, new_options)

      end