public function populate() {
        $defaultError = $this->getErrorCodeMap()[parent::INTERNAL_SERVER_ERROR];
        $defaultMessage = $defaultError->message;

        $mes = function ($skuMetaId) {
            return sprintf(
                // translators: Welcart SKU meta ID
                __('An SKU with the meta ID "%d" does not exist', 'wcexics'),
                $skuMetaId
            );
        };
        $this->addError(new GenericError(
            self::SKU_NOT_FOUND,
            $this->getConstantNameByValue(self::SKU_NOT_FOUND),
            404,
            $mes,
            __('This item is no longer available', 'wcexics'),
            __('This SKU doesnt exist. Please refresh the page to see up-to-date info for this combo-set', 'wcexics')
        ));

        $mes = function ($groupId) {
            return sprintf(
                // translators: Combo group ID
                __('A combo group with the group ID "%d" does not exist', 'wcexics'),
                $groupId
            );
        };
        $this->addError(new GenericError(
            self::COMBO_GROUP_NOT_FOUND,
            $this->getConstantNameByValue(self::COMBO_GROUP_NOT_FOUND),
            404,
            $mes,
            __('Selections for this combo-set item have been updated. Please refresh the page and try again.', 'wcexics'),
            $mes
        ));

        $mes = function ($itemId) {
            return sprintf(
                // translators: Group item ID
                __('A group item with the item ID "%d" does not exist', 'wcexics'),
                $itemId
            );
        };
        $this->addError(new GenericError(
            self::GROUP_ITEM_NOT_FOUND,
            $this->getConstantNameByValue(self::GROUP_ITEM_NOT_FOUND),
            404,
            $mes,
            __('Selections for this combo-set item have been updated. Please refresh the page and try again.', 'wcexics'),
            __('This group item doesnt exist. Please refresh the page to see up-to-date info for this combo-set', 'wcexics')
        ));

        $debug = function (ComboGroup $group) {
            return sprintf(
                // translators: Group ID
                __('Group ID "%d" is required but no items were provided.', 'wcexics'),
                $group->getId()
            );
        };
        $mes = function (ComboGroup $group) {
            return sprintf(
                // translators: Group name
                __('Please choose an item for "%s"', 'wcexics'),
                $group->getLabel()
            );
        };
        $this->addError(new GenericError(
            self::COMBO_GROUP_IS_REQUIRED,
            $this->getConstantNameByValue(self::COMBO_GROUP_IS_REQUIRED),
            400,
            $debug,
            $mes,
            $debug
        ));

        $mes = function ($skuMetaId) {
            return sprintf(
                // translators: Combo-set item SKU meta ID
                __('A combo-set item with the SKU meta ID "%d" does not exist', 'wcexics'),
                (int)$skuMetaId
            );
        };
        $this->addError(new GenericError(
            self::COMBO_SET_NOT_FOUND_BY_SKU_META_ID,
            $this->getConstantNameByValue(self::COMBO_SET_NOT_FOUND_BY_SKU_META_ID),
            404,
            $mes,
            __('This item is no longer available', 'wcexics'),
            __('This combo-set doesnt exist. Please refresh the page to see up-to-date info for this combo-set', 'wcexics')
        ));

        $mes = function ($post_id, $skucode) {
            return sprintf(
                // translators: 1. Post ID 2. SKU code
                __('A combo-set item with the post ID "%1$d" and SKU code "%2$s" does not exist', 'wcexics'),
                (int)$post_id,
                (string)$skucode
            );
        };
        $this->addError(new GenericError(
            self::COMBO_SET_NOT_FOUND_BY_SKU_CODE,
            $this->getConstantNameByValue(self::COMBO_SET_NOT_FOUND_BY_SKU_CODE),
            404,
            $mes,
            __('This item is no longer available', 'wcexics'),
            __('This SKU doesnt exist. Please refresh the page to see up-to-date info for this combo-set', 'wcexics')
        ));

        $mes = function ($comboSetId) {
            return sprintf(
                // translators: Combo-set ID
                __('A combo-set item with the ID "%d" does not exist', 'wcexics'),
                (int)$comboSetId
            );
        };
        $this->addError(new GenericError(
            self::COMBO_SET_NOT_FOUND_BY_ID,
            $this->getConstantNameByValue(self::COMBO_SET_NOT_FOUND_BY_ID),
            404,
            $mes,
            __('Selections for this combo-set item have been updated. Please refresh the page and try again.', 'wcexics'),
            $mes
        ));

        $this->addError(new GenericError(
            self::REQUIRED_FIELDS_MISSING,
            $this->getConstantNameByValue(self::REQUIRED_FIELDS_MISSING),
            400,
            function ($field) {
                return sprintf(
                    // translators: The missing field
                    __('The field "%s" is required.', 'wcexics'),
                    $field
                );
            },
            function ($message = '') use ($defaultMessage) {
                return !empty($message) ? $message : $defaultMessage;
            }
        ));

        $mes = __('This SKU is already in use by another combo-set.', 'wcexics');
        $this->addError(new GenericError(
            self::SKU_IS_COMBO_SET_GROUP_ITEM,
            $this->getConstantNameByValue(self::SKU_IS_COMBO_SET_GROUP_ITEM),
            409,
            $mes,
            $mes
        ));

        $mes = __('This SKU is a combo-set. It cannot be added as a group item', 'wcexics');
        $this->addError(new GenericError(
            self::SKU_IS_COMBO_SET,
            $this->getConstantNameByValue(self::SKU_IS_COMBO_SET),
            409,
            $mes,
            $mes
        ));

        $mes = __('This SKU is already a combo-set', 'wcexics');
        $this->addError(new GenericError(
            self::COMBO_SET_ALREADY_EXISTS,
            $this->getConstantNameByValue(self::COMBO_SET_ALREADY_EXISTS),
            409,
            $mes,
            $mes
        ));

        $this->addError(new GenericError(
            self::COMBO_SET_DIVISION_INVALID,
            $this->getConstantNameByValue(self::COMBO_SET_DIVISION_INVALID),
            409,
            function ($division, $gidivision, $details = '') {
                return sprintf(
                    join(
                        ' ',
                        [
                            // translators: 1. the combo-set item division 2. the invalid group item division
                            __('Invalid division: the combo-set division is "%1$s" but at least one of the items is "%2$s".', 'wcexics'),
                            trim($details),
                        ]
                    ),
                    $division,
                    $gidivision
                );
            },
            __('This combination of items is not allowed', 'wcexics')
        ));

        $mes = function ($cschargetype, $gichargetype) {
            return sprintf(
                // translators: 1. the group item charge type 2. the combo-set charge type
                __('An item with a charge type of "%1$s" cannot be added to a combo-set whose charge type is "%2$s".', 'wcexics'),
                $gichargetype,
                $cschargetype
            );
        };
        $this->addError(new GenericError(
            self::INVALID_CHARGE_TYPE_COMBINATION,
            $this->getConstantNameByValue(self::INVALID_CHARGE_TYPE_COMBINATION),
            409,
            $mes,
            __('This combination of items is not allowed', 'wcexics'),
            $mes
        ));
    }