abp/framework/src/Volo.Abp.Data/Volo/Abp/Data/DataSeederExtensions.cs

using System;
using System.Threading.Tasks;

namespace Volo.Abp.Data
{
    public static class DataSeederExtensions
    {
        public static Task SeedAsync(this IDataSeeder seeder, Guid? tenantId = null)
        {
            return seeder.SeedAsync(new DataSeedContext(tenantId));
        }
    }
}