Controls the display behavior of a choice. Only supported for Choice Message on the RCS channel.
Has no effect on other channels or message types, except for a carousel's outer choices, where it is rejected outright.
DISPLAY_MODE_UNSPECIFIED: Default. Transient — choice disappears when new messages arrive.
PERSISTENT: Persistent — choice remains visible in the message bubble.
Controls the display behavior of a choice. Only supported for Choice Message on the RCS channel. Has no effect on other channels or message types, except for a carousel's outer choices, where it is rejected outright.
DISPLAY_MODE_UNSPECIFIED: Default. Transient — choice disappears when new messages arrive.PERSISTENT: Persistent — choice remains visible in the message bubble.