using System; namespace Castle.Components.DictionaryAdapter { [AttributeUsage(AttributeTargets.Property, AllowMultiple = false)] public class IfExistsAttribute : Attribute { } } namespace Castle.Components.DictionaryAdapter { [AttributeUsage(AttributeTargets.Property, AllowMultiple = false)] public class IfExistsAttribute : Attribute { public IfExistsAttribute() { base..ctor(); } } }