Delete all contents in a folder from Workfront REST API?

Hello, I'm trying to figure out how I can delete all of a project folder's content using the Workfront REST API. Currently with endpoint 

using DELETE method, the default behavior is to delete the folder but keep the contents, which get moved to the project/root level. However, I'd like all contents in a folder to be deleted. I was under the impression this is what force=true would do, but it seems not to be the case. Is there a way to do this in the WF API? I've been looking around to no avail. Thanks in advance!