namespace System.ComponentModel.DataAnnotations
{
    [AttributeUsage(AttributeTargets.Property | AttributeTargets.Field, AllowMultiple = false, Inherited = true)]
    [Obsolete("This attribute is no longer in use and will be ignored if applied.")]
    public sealed class AssociationAttribute : Attribute
    {
        public bool IsForeignKey { get; set; }
    }
}