RTC Work Item Attachment Download - new function request question

It's very nice rtcclient is implemented to extract various information in various types of workitems of RTC. For a migration project I am on, I need to export as much information from RTC as possible, including work item attachment. I was able to use getAttachment to retrieve work item attachments details, and wondering, if a download attachment function is available, or to be considered to add to future releases.
There's a post about the download, someone had decleared working, though it'd be nice to collaborate into the same client.
https://jazz.net/forum/questions/276910/downloading-an-attachment-from-rtc-workitem-via-rest-using-python

This is more of a new feature request question, instead of any issue reporting. Thanks!