[seanalltogether]

Obj-C and Swift allow comments to go along with translation strings, so you would add

    let buttonStr = NSLocalizedString("Open ticket", comment: "For user to open a ticket")

And the comment would make its way into the eventual xliff file sent to translators

[jraph]

This looks like the right approach: giving context to the translation strings.

Many translation tools give the locations in the code where a string is used. It's a first step, though translators are not always able to read code.