ConditionGroup::addItem

public function addItem(array $item): ConditionGroup
{
	if (!empty($item))
	{
		$this->items[] = [
			'condition' => new Condition($item),
			'joiner' => isset($item['joiner']) && $item['joiner'] === 0 ? static::JOINER_AND : self::JOINER_OR,
			'valueToCheck' => $item['valueToCheck'] ?? null,
			'fieldType' => $item['fieldType'] ?? new FieldType([], [], 'Bitrix\Bizproc\BaseType\StringType')
		];
	}

	return $this;
}