pub static COMPLICATION: HeaderValueExpand description
Use the complication push type for notifications that contain update
information for a watchOS app’s complications. For more information, see
Keeping Your Complications Up to Date.
If you set this push type, the apns-topic header field must use your app’s
bundle ID with .complication appended to the end. If you’re using
certificate-based authentication, you must also register the certificate for
WatchKit services. The topic is then part of the 1.2.840.113635.100.6.3.6
extension.
The complication push type is recommended for watchOS and iOS. It is not
available on macOS, tvOS, and iPadOS.