Multitabs: Closing Tab when pressing Save or Cancel (How to)

Dear Developers,
I am testing the new “Multiple tabs” feature developed by @hadi.nategh .
So I have an edit form which I open in a new tab:

My question is what js code I have to write at the “save” and “cancel” buttons in order to close the opened tab again?

Thank you for your support and best regards

Alex