你知道Unity IoC Container是如何创建对象的吗？

   1: public interface IBuilderContext

   2: {

   3:     //Others...

   4:     bool BuildComplete { get; set; }

   5:     NamedTypeBuildKey BuildKey { get; set; }

   6:     NamedTypeBuildKey OriginalBuildKey { get; }

   7:     object CurrentOperation { get; set; }

   8:     object Existing { get; set; }

   9: }