This link demand check occurs for both discovery of type information and invocation 对于类型信息发现和调用都会进行此链接请求检查。
3.
In this case the link demand check occurs twice : once for the code that returns the 在这种情况下，链接要求检查会进行两次：一次是检查返回
4.
Than a link demand checks the immediate caller of the code accessed through reflection 访问由链接要求保护的方法，则链接要求会检查通过反射访问的代码的直接调用方。
5.
The runtime will perform a link demand check against the caller of the method or delegate to verify that the caller has been granted permission ，运行库将对该方法或委托的调用方执行链接请求检查，以验证调用方是否已被授予权限
