3x Magento Master
To Retrieve Media Images Roles type from the Product in Magento 2 is useful to know each image role whether its small_image, thumbnail, or swatch image.
When you create a product, you need to assigned roles based on its display position.
The Base Role will be displayed on the product detail page.
A small Role will be displayed on the category listing page.
The ThumbnailRole will be displayed on the Shopping Cart page.
Swatch imageRole will be displayed on the product swatches.
Wishlist adds product events that will be used to define data after a successful item added to the wishlist.
If you want to trigger something once product added to wishlist or do some action after item added to the wishlist, you need to define "wishlist_add_product" in your events.xml file.
Create Observer Class to handle your logic after adding items to the wishlist. In the observer file, You got Product, Wishlist, and Current Item object, based on that you can retrieve/modify your logic.
Cross-sell products will be displayed on the Shopping cart page. If you want to disable cross sell items from the shopping cart page, You need to disable setting from the Configuration.
Out of the Box, Cross-sell products will be displayed on cart page though you can disable if you want, from the admin panel.