async getReactions() {
        if (!this.hasReaction) {
            return undefined;
        }

        const reactions = await this.client.pupPage.evaluate(async (msgId) => {
            const msgReactions = await window.Store.Reactions.find(msgId);
            if (!msgReactions || !msgReactions.reactions.length) return null;
            return msgReactions.reactions.serialize();
        }, this.id._serialized);

        if (!reactions) {
            return undefined;
        }

        return reactions.map(reaction => {
            reaction.senders = reaction.senders.map(sender => {
                sender.timestamp = Math.round(sender.timestamp / 1000);
                return new Reaction(this.client, sender);
            });
            return reaction;
        });
    }
Gets the reactions associated with the given message
@return {Promise<ReactionList[]>}