如何在命名空间中记录变量（在Silverstripe中的其他位置工作）

With a Silverstripe site, how do I log within a namespace or within a class under the vendor folder?

e.g. SS_Log::log(print_r($variable, true), SS_Log::NOTICE);

Have tried using a backslash \SS_Log::log(print_r($variable, true), \SS_Log::NOTICE);

Logging works fine outside a namespaced class/vendor folder, so this is not a config setting issue.

Do I need a use statement? Any advice please?

Update Thank you for your comments. You are right \SS_Log::log(print_r($variable, true), \SS_Log::NOTICE); works within a namespace in the vendor folder. My mistake, I wasn't calling the correct function; hence the lack of logs appearing.