Technically, it's possible.
Since it's part of the runtime, you should be able to implement findAllChildSlots(
).
Note the following relevant information:
The Skeleton holds the Bones as a list and as a bidirectional tree. Skeleton.bones and Skeleton.rootBone. The bones are arranged from parent to child starting from the root bone.
The Bone class/struct has a parent and a children field.
Bones aren't aware of their slots. The Bone class/struct doesn't have a slots list.
The Skeleton holds the list of Slots. Skeleton.slots. This list is arranged according to default draw order.
Slots are aware of their parent bones. The Slot class/struct has a bone field.
Pseudocode for findAllChildSlots would be
(1) find the parent bone using skeleton.findBone()
(2) prepare a collection for keeping a list of bones.
(3) traverse the bone.children starting from the bone you found, until all its children have no more children, adding each bone to the list.
(4) prepare a collection for keeping a list of slots.
(5) go through all the slots in skeleton.slots. If the slot.bone exists in your collection of bones, add that slot to the list.
(6) return your collection of slots