since it is possible in the UI, and the API documentation for wbsetclaim
also states that it "Creates or updates an entire Statement or Claim", I am
wondering how I can create a claim with a reference (wbcreateclaim does not
allow adding a reference).
So, my questions are:
1. Does the API allow the creation of a claim with a reference in a single
step? And if yes, how?
2. Does pyWikibot allow it? And if yes, how?