从Objective-C轻型通用类继承的Swift类在Objective-C代码中不可见

Question

我有一个Objective-c课程

@interface LightweightGenericHolder<T: NSObject*> : NSObject

@property (nonatomic, strong, readwrite) T value;

@end

我从中创建了swift子类

public class LightweightGenericHolderSubclass: LightweightGenericHolder<NSString> {

}

在目标C代码中使用 LightweightGenericHolderSubclass 会产生错误使用未声明的标识符'LightweightGenericHolderSubclass'

如何使该班级可见？

谢谢。