Get items and limited children items

Gets items (single item or bundles) by skus or parent skus. When a parent SKU is sent as query parameter, you'll get children items of those SKUs. When parentSKU is not specified, children items are not retrieved. Optionally, page and size can be used as query parameters. Note:
1) status and date query parameters works only with pagination when parentSku is omitted. Separate responses are shown for bundle and product.
2) when parentSku is passed as request parameter, it will only return the paginated response of children of parentSKU.