FCModel : Pre populated database sql in ios

How to pre populated database in iOS, can i Copy bundle database in Document directory with the use of FCModel.

I have seen that library but not getting any clue.

Or can any one help me what dose this below line do.

[FCModel inDatabaseSync:^(FMDatabase *db) {
    [FCModel inDatabaseSync:^(FMDatabase *db) {

    }];
}];

Thanks