namespace System.Runtime.CompilerServices
{
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Event | AttributeTargets.Parameter | AttributeTargets.ReturnValue | AttributeTargets.GenericParameter, Inherited = false)]
    [EditorBrowsable(EditorBrowsableState.Never)]
    public sealed class NullableAttribute : Attribute
    {
        public NullableAttribute(byte value);
    }
}