namespace System.Web.ModelBinding {
 
    public sealed class MutableObjectModelBinderProvider : ModelBinderProvider {
 
        public override IModelBinder GetBinder(ModelBindingExecutionContext modelBindingExecutionContext, ModelBindingContext bindingContext) {
            ModelBinderUtil.ValidateBindingContext(bindingContext);
 
            if (!bindingContext.UnvalidatedValueProvider.ContainsPrefix(bindingContext.ModelName)) {
                // no values to bind
                return null;
            }
 
            if (bindingContext.ModelType == typeof(ComplexModel)) {
                // forbidden type - will cause a stack overflow if we try binding this type
                return null;
            }
 
            return new MutableObjectModelBinder();
        }
 
    }
}