namespace System.Dynamic { public abstract class CreateInstanceBinder : DynamicMetaObjectBinder { public CallInfo CallInfo { get; } protected CreateInstanceBinder(CallInfo callInfo); public DynamicMetaObject FallbackCreateInstance(DynamicMetaObject target, DynamicMetaObject[] args); public abstract DynamicMetaObject FallbackCreateInstance(DynamicMetaObject target, DynamicMetaObject[] args, DynamicMetaObject errorSuggestion); } }