namespace System.Diagnostics.CodeAnalysis { [AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter, AllowMultiple = false, Inherited = false)] internal sealed class StringSyntaxAttribute : Attribute { public StringSyntaxAttribute(string syntax) { <Syntax>k__BackingField = syntax; <Arguments>k__BackingField = Array.Empty<object>(); } } }