
Also make future similar issues less likely by adding isPlaceholder to the set method of Period (in case forwarding Timeline implementations use this instead of just updating values selectively) #minor-release PiperOrigin-RevId: 372138523
Also make future similar issues less likely by adding isPlaceholder to the set method of Period (in case forwarding Timeline implementations use this instead of just updating values selectively) #minor-release PiperOrigin-RevId: 372138523