同一表ef核心中有多个“一对多”关系

Question

使用实体框架核心2.2.4如何与同一表中的“一对多”关系？我用流利的api建立外键关系

 public class Animal
    {
        [Key]
        public string AnimalId { get; set; }

        public int CategoryId { get; set; }
        public DateTime BirthDate { get; set; }

        public string FatherId { get; set; }
        public string MotherId { get; set; }

        public int GenotypeId { get; set; }

        #region Foreign Key

        public Genotype Genotype { get; set; }
        public ICollection<Animal> Animals { get; set; }
        public Animal FatherAnimal{ get; set; }
        public Animal MotherAnimal{ get; set; }

        public AnimalCategory AnimalCategory { get; set; }
        #endregion

    }

Fluent API：

builder.HasOne<Animal>(s => s.FatherAnimal)
                .WithMany(a => a.Animals)
                .HasForeignKey(s => s.FatherId ).OnDelete(DeleteBehavior.Cascade);
            builder.HasOne<Animal>(s => s.MotherAnimal)
                .WithMany(a => a.Animals)
                .HasForeignKey(s => s.MotherId ).OnDelete(DeleteBehavior.Cascade);

无法在“ Animal.Animals”和“ Animal.MotherAnimal”之间创建关系，因为“ Animal.Animals”和“ Animal.FatherAnimal”之间已经存在关系。导航属性只能参与单个关系。