/// <inheritdoc />
 protected override void Customize(NHibernateSessionFactoryBuilder builder)
 {
     base.Customize(builder);
     builder.UsePersistenceConfigurer(new SQLiteConfiguration().InMemory());
     builder.UseProperties(new SortedList <string, string>()
     {
         [Environment.ReleaseConnections] = "on_close",
         [Environment.Hbm2ddlAuto]        = "create"
     });
 }