public function getAttributes()
    {
        $attributes = array_merge(
            parent::getAttributes(),
            $this->getDataAttributes()
        );
        
        if ($this->isMultiple()) {
            $attributes['multiple'] = true;
            $attributes['name'] = $this->getMultipleName();
        }
        
        if (!isset($attributes['data-placeholder'])) {
            $attributes['data-placeholder'] = $this->getEmptyString();
        }
        
        return $attributes;
    }