テーマでFont-Awesome 4のアイコンを使用しつつ、FA5は維持できますか？

[Chaboi_3000]

Thanks, @Falco, and @dax, but how would I reference that uploaded SVG icon?
Currently, I’m trying to do this:

api.replaceIcon('shield-alt', '$old-icon);

But it leaves a blank space instead of loading the SVG icon. Am I doing something wrong?