public static IDomainBuilder AddMongo(this IDomainBuilder builder, IConfiguration configuration)
{
builder.AddMongoOptions(configuration);
builder.Services.TryAdd(new ServiceCollection()
.AddSingleton <IEventStore, MongoEventStore>()
.AddSingleton <ISubscribeEventStore, MongoSubscribeEventStore>()
.AddSingleton <ISnapshootQueryFactory, MongoSnapshootQueryFactory>()
.AddSingleton <ISnapshootStoreFactory, MongoSnapshootStoreFactory>()
.AddSingleton <IDatabaseInitializer, MongoDatabaseInitializer>()
);
return(builder);
}