code: function (criteria) {
              return this.find(
                  { where: criteria, limit: 1, sort: { createdAt: -1 } }
              ).then(function (records) {
                  return records[0];
              });
          }
docs: Extend a criteria object with additional waterline query paramters to
  find the single most recently updated object that matches the criteria.
  Returns the waterline (bluebird) promise from the find method with the
  extended criteria.
  
  @param {Object} criteria
  @returns {Deferred}