error

loadRecords: function(recordTypes, dataHashes, ids) {
    var isArray = SC.typeOf(recordTypes) === SC.T_ARRAY,
        len     = dataHashes.get('length'),
        ret     = [],
        K       = SC.Record,
        recordType, id, primaryKey, idx, dataHash, storeKey;
        
    // save lookup info
    if (!isArray) {
      recordType = recordTypes || SC.Record;
      primaryKey = recordType.prototype.primaryKey ;
    }