Chirp 3 HD pause control not available for all locales (contrary to docs)

I was hoping to put pauses in Swedish TTS. The documentation says that pause control is available in all locales: Chirp 3: HD voices  |  Cloud Text-to-Speech API  |  Google Cloud. However I get this 400 response, suggesting it isn’t:

InvalidArgument: 400 Pause tags are not supported for locale `sv-SE`.

It would be good to know if this feature will be available, thanks