Use a naming convention to ignore the unused variable warning

For example :

        for (String i : arrayName)
            ArrayListName.add(someIntVariable++);

I need the length of arrayName, but I need not i. Obviously, the language server will prompt the warning of The value of the local variable i is not used.

I can suppress the warning through add @SuppressWarnings("unused") before the method/class. But IntelliJ has a better solution: you can rename i to ignored to suppress this warning. Could we provide a similar function?

从 issue 中描述的未使用局部变量警告的 Java language-server 处理入手，并检查 IntelliJ 如何处理名称 ignored。确定受支持的命名约定及其适用范围，然后验证将 i 重命名为 ignored 会抑制该警告，但不会抑制其他未使用变量诊断。