private void addReactionGroups(
            im.turms.client.model.proto.model.message.MessageReactionGroup value) {
        value.getClass();
        ensureReactionGroupsIsMutable();
        reactionGroups_.add(value);
    }
<code>repeated .im.turms.proto.MessageReactionGroup reaction_groups = 12;</code>
turms-client-kotlin/src/main/java/im/turms/client/model/proto/model/message/Message.java