EntityTypeBuilder中的OnDelete<t>ASP.NET Core 2实体框架

我使用下面的modelbuilder在数据库上设置我的关系。

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
    modelBuilder.HasDefaultSchema(schema: DbGlobals.SchemaName);

    modelBuilder.AddConfiguration<Address>(new AddressConfiguration());
    /*reduced for brevity*/

    base.OnModelCreating(modelBuilder);
}

在哪里 AddressConfiguration() 我有以下文件:

using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata.Builders;

namespace Data.EF.Configuration
{
    internal class AddressConfiguration : DbEntityConfiguration<Address>
    {
        public override void Configure(EntityTypeBuilder<Address> entity)
        {
            entity.HasKey(x => x.Id);
            entity.Property(x => x.Latitude).HasColumnType($"decimal(9,6)").IsRequired();
            entity.Property(x => x.Longitude).HasColumnType($"decimal(9,6)").IsRequired();
            //I have tried the following but it says doesnt exist
            //entity.OnDelete(DeleteBehavior.Cascade);
        }
    }
}

现在我的地址模型有 List<Contact> Contacts { get; set; } . 如何配置模型。要在删除地址时删除级联吗?

我发现了以下联系;

Delete Cascade in EF Core

其中详细说明了 OnDelete 方法,但是在 EntityTypeBuilder<T> ?

有人能告诉我我在这里做错了什么吗?