Requiring an extension from another one

Hi everyone,

If I want to make an extension that depends on another one being present
activated, what’s the best way to go about this?
For example, I’m putting together something that requires the RecordTags
extension, and in testing it never seems to activate if I just put in a
require like this: require

Do I need to actually call RecordTagsExtension#activate in my
activate method? Anything else I need to make sure of?