It is reflexive: for any non-null reference value x, x.equals (x) should return true.
具有反射性：对于任何非空的参考值x,x.e quals (x)应该返回真值。
To connect an SCA reference or service to non-SCA code, you can
将引用或服务连接到非SCA程序，你可以
Code is simple, non-technical content, the code is for reference only!
代码简单，无技术含量，代码仅作参考！
Code is simple, non-technical content, the code is for reference only!
代码简单，无技术含量，代码仅作参考！
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