In that case, a new singleton object will be created.
在这种情况下，一个新的单例对象会被创建。
The design of this class ensures that only one Singleton object is ever created.
此类的设计确保只创建一个Singleton对象。
How to run test cases for Singleton object with multiple state?
如何运行多个状态对象的测试用例？
How to run test cases for Singleton object with multiple state?
如何运行多个状态对象的测试用例？
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