code: function saveAsset (asset,res) {
  		asset.save (function (err) {
  			if (err) { return next(err); }
              var response = {
                  _id: asset.id,
                  metadata: asset.metadata,
                  name: asset.name
              };
  			return res.json(200, response);	//and send the response
  		});
  	}
docs: /*
  Mongoose save function, used by default