I have Magento 2.3. I created  Status.php in [Banner/Slider/Model/Slider/Source]
but it gives an error 
[Invalid argument supplied for foreach() in C:\xampp\htdocs\mag3\app\code\Banner\Slider\Model\Slider\Source\Status.php on line 22]

this is Status.php

    <?php
    
    namespace Banner\Slider\Model\Slider\Source;
    
    use Banner\Slider\Model\Slider;
    use Magento\Framework\Data\OptionSourceInterface;
    
    
    class Status implements OptionSourceInterface
    {
        protected $status_slider;
    
        public function __construct(Slider $status_slider)
        {
            $this->status_slider = $status_slider;
        }
    
        public function toOptionArray()
        {
            $availableOptions = $this->status_slider->getAvailableStatuses();
            $options = [];
            foreach ($availableOptions as $key => $value) {
                $options[] = [
                    'label' => $value,
                    'value' => $key,
                ];
            }
            return $options;
        }
    }