namespace Microsoft.EntityFrameworkCore
{
    public abstract class ModelBuilding101TestBase
    {
        protected class OneToOneRequiredNrt
        {
            public class ContextAnnotated0 : Context101
            {
                public class BlogHeader
                {
                    [ForeignKey("BlogId")]
                    [InverseProperty("Header")]
                    [Required]
                    public Blog! Blog { get; set; }
                }
            }
        }
    }
}