public void InitDb(DbConnectionString dbConnectionString)
 {
     if (!_initedDb.TryAdd(dbConnectionString, dbConnectionString.AsSqlConnectionString <T>()))
     {
         return; // Db already initialized.
     }
     _initedDb[dbConnectionString].EnsureDb();
     _actions.ForEach(a => a.Invoke(_initedDb[dbConnectionString]));
 }