documentation/_custom_filter_interface_8php_source.html

 <?php
 namespace Magento\Framework\Api\SearchCriteria\CollectionProcessor\FilterProcessor;

 use Magento\Framework\Api\Filter;
 use Magento\Framework\Data\Collection\AbstractDb;

 interface CustomFilterInterface
 {
     public function apply(Filter $filter, AbstractDb $collection);
 }
Magento\Framework\Api\Filter
Definition: Filter.php:18

Magento\Framework\Api\SearchCriteria\CollectionProcessor\FilterProcessor
Definition: CustomFilterInterface.php:6

Magento\Framework\Api\SearchCriteria\CollectionProcessor\FilterProcessor\CustomFilterInterface\apply
apply(Filter $filter, AbstractDb $collection)

Magento\Framework\Data\Collection\AbstractDb
Definition: AbstractDb.php:23

Magento\Framework\Api\SearchCriteria\CollectionProcessor\FilterProcessor\CustomFilterInterface
Definition: CustomFilterInterface.php:15

$collection
$collection
Definition: catalog_category_with_apostrophe_rollback.php:17