static setMaxVisible (amount = API.DefaultMaxVisible, queueName = 'global') {
    if (!API.Queues.hasOwnProperty(queueName)) {
      API.Queues[queueName] = {maxVisible: amount, queue: []}
    }

    API.Queues[queueName].maxVisible = amount
    return this
  }
@param {int} amount
@param {string} queueName
@return {Noty}