EF 4.1代码优先：一对多映射问题

    public class Document
    {    
        public string Id { get; set; }
        public IList<MetadataValue> MetadataList { get; set; }
    }

    public class MetadataValue
    {
        public string DocumentId { get; set; }
        public string Metadata { get; set; }
        public string Value { get; set; }
    }

    HasMany<MetadataValue>(x => x.MetadataList)
        .WithRequired()
        .HasForeignKey(x => x.DocumentId);

virtual

var query = dbContext.Documents
    .Where(d => d.Id == \"MyDoc\")
    .Include(d => d.MetadataList);

public virtual ICollection<MetadataValue> MetadataList { get; set; }