流畅的API关联映射，无需导航EF6

Question

我们有以下表结构

Person
--ID  (PK)
--NAME

Bank Account 
   P_ID (FK - Person.ID)
   Name
   Number



RichPerson
   P_ID (FK - Person.ID
   Age  
   ..other fields

   (primary key (P_ID, Age)

我们要努力实现的是为RichPerson加载银行帐户 即

 class RichPerson
{
           public int P_ID {get;set;}
           public int Age  {get;set;}
           public List<BankAccount> accounts;

 }


 class Person {
           public int ID {get; set;}
           public string Name {get;set;}
}

 class BankAccount {
           public int P_ID {get;set;}
           public string Name {get; set;}
           public int Number {get;set;}
           /* No navigation property is a requirement */
}           

我们已经尝试了各种选项，但无法找出可以在这里进行的关联映射，

在我们目前拥有的entitytypeconfigurait中

public class RichPersonMap : EntityTypeConfiguration<RichPerson> {

...
this.HasKey(t => new { t.P_ID, t.Age });
...
this.HasMany(x => x.accounts)
               .WithOptional()
               .Map(/* WHAT GOES HERE */);

}