How do I access the size of a sprite?

Development Programming & Scripting Blueprint
2

I’ve found out how to get the X and Y dimensions of a texture, but I still can’t figure out if it’s possible to access a sprite’s texture through Blueprints. Presumably it is, and the documentation even seems to imply it:
https://docs.unrealengine.com/latest/INT/API/Plugins/Paper2D/UPaperSprite/index.html

But I can’t use GetSourceTexture() for instance. It doesn’t seem to exist or can’t be used for some reason.