public static IdentityEFPersistenceBuilder Build(IConfiguration configuration)
        {
            if (instance == null)
            {
                instance = new IdentityEFPersistenceBuilder(configuration);
            }

            return(instance);
        }
 protected override IPersistenceBuider CreatePersistenceBuilder(IConfiguration configuration)
 {
     return(IdentityEFPersistenceBuilder.Build(configuration));
 }