message
open suspend override fun messageReactions(messageId: MessageId, before: MessageId? = null, limit: UInt? = null): List<ReactionMessage>
Reaction messages to message_id, newest first by send time, then sequence id, then message id: at most limit (1 to 1000; 50 when absent). For the next page, pass the last returned id as before. A before that is not an unexpired reaction to this message fails with InvalidArgument; restart from the newest reaction. A deleted or expired message has none.