There's nothing like that in the documentation...
Not that necessarily means that it isn't what is needed!

Part of the problem is the lengthy process of testing it. It needs the skill disabling in the Alexa app, then discovery have to happen which takes upward of a minute, then configuration followed by testing that the open/close functionality is working to prove that discovery happened right and then, finally, we get to ask "Alexa, are the curtains open" so we can check the Lambda logs to see if we have a ReportState directive...