# File lib/fog/compute/openstack/requests/attach_volume.rb, line 22
        def attach_volume(volume_id, server_id, device)
          response = Excon::Response.new
          response.status = 200
          data = {
            'id'       => volume_id,
            'volumeId' => volume_id,
            'serverId' => server_id,
            'device'   => device
          }
          self.data[:volumes][volume_id]['attachments'] << data
          self.data[:volumes][volume_id]['status'] = 'in-use'
          response.body = {'volumeAttachment' => data}
          response
        end