# File lib/fog/ibm/models/compute/server.rb, line 144
        def expire_at(time)
          expiry_time = (time.tv_sec * 1000).to_i
          data = connection.modify_instance(id, 'expirationTime' => expiry_time)
          if data.body['expirationTime'] == expiry_time
            attributes[:expires_at] = expiry_time
            true
          else
            false
          end
        end