setItems (settings) {
    if (!settings) {
      log.error('Cannot change settings without entires: object is undefined or null.')
      return
    }

    Object.keys(settings).forEach(key => {
      this.setItem(key, settings[key])
    })
  }
Change multiple setting entries.

@param {Object.<string, *>} settings A settings object or subset object with key/value entries.