FieldRepository::getCategoryId

public function getCategoryId(
	string $fieldName = Item::FIELD_NAME_CATEGORY_ID,
	int $entityTypeId = \CCrmOwnerType::Undefined
): ScalarField
{
	return
		(new IntegerField($fieldName))
			->configureRequired()
			->configureDefaultValue($this->getDefaultCategoryIdResolver($entityTypeId))
			->configureTitle(Loc::getMessage('CRM_COMMON_CATEGORY'))
	;
}