what are childPosts?

The community member is using an Instagram scraper for the first time and is confused about what "childPosts" are. They understand that in a carousel post, there are multiple media files that are considered "children", and can have their own captions. However, they are unsure what the properties "childPosts/2/likesCount", "childPosts/1/firstComment", and "childPosts/2/ownerId" refer to, as they would expect the number of likes, comments, and owners to be the same as the parent post.

In the comments, another community member suggests that for questions about a specific "Actor", the community member should use the "Issue tab in the Actor detail". However, there is no explicitly marked answer to the original question.