emptyoperator.php

См. документацию.

<?php
 
namespace Bitrix\Bizproc\Activity\Operator;
 
use Bitrix\Bizproc\FieldType;
use Bitrix\Main\Localization\Loc;
 
class EmptyOperator extends BaseOperator
{
    public static function getCode(): string
    {
        return 'empty';
    }
 
    public static function getTitle(): string
    {
        return Loc::getMessage('BIZPROC_ACTIVITY_CONDITION_OPERATORS_EMPTY_OPERATOR_TITLE') ?? '';
    }
 
    protected function toBaseType(): void
    {}
 
    public function check(): bool
    {
        return \CBPHelper::isEmptyValue($this->toCheck);
    }
}