How to use the loopback-connector.SqlConnector.prototype function in loopback-connector

Cassandra.prototype._buildFieldsForKeys = function(model, data, keys, excludeIds) {
  // Remove cluster Ids from keys if excludeIds is true
  var clusterIdNames = this.clusterIdNames(model);
  var validKeys = keys;
  if (excludeIds ) {
    validKeys = keys.filter(function(element) {
      return clusterIdNames.indexOf(element) === -1;
    });
  }

  return SqlConnector.prototype._buildFieldsForKeys.call(this, model, data, validKeys, excludeIds);
};

Cassandra.prototype.updateAttributes = function(model, id, data, options, cb) {
  data = this._restoreToObject(model, data);
  SqlConnector.prototype.updateAttributes.call(this, model, id, data, options, cb);
};