def create_reaction(reaction)
      reaction = reaction.to_reaction if reaction.respond_to?(:to_reaction)
      API::Channel.create_reaction(@bot.token, @channel.id, @id, reaction)
      nil
    end
def create_reaction(reaction)
      reaction = reaction.to_reaction if reaction.respond_to?(:to_reaction)
      API::Channel.create_reaction(@bot.token, @channel.id, @id, reaction)
      nil
    end
Reacts to a message.
 @param reaction [String, #to_reaction] the unicode emoji or {Emoji}