UrlInvalidator/UrlInvalidatorService.php
public function addDocumentParameter($field, $value)
    {
        $this->documentParamCache[md5($value . $field)] = [$field, $value];
    }
public function addDocumentParameter($field, $value)
    {
        $this->documentParamCache[md5($value . $field)] = [$field, $value];
    }
Adds document whose links should be invalidated.

@param string $field
@param string $value