CategoryTreeChildren
Return the child categories from a category tree column.
Overview
See the CategoryTree column for usage examples.
The ancestors are all direct descendants of a given category. So, given the following tree:
``` Root/ ├─ Sub/ │ ├─ Sub Sub/ │ │ ├─ Sub Sub Sub/ ├─ Another Child/
The children of Root are ["Sub", "Another Child"]. The children of Sub Sub are ["Sub Sub Sub"].
category_tree_column_name
Required
The name of the category tree column we are connected to.