As bankruptcy practitioners will recall, the Supreme Court held in Stern v. Marshall, 564 U.S., 131 S.Ct. 2594, 2620 (2011) that bankruptcy courts, as non-Article III courts, “lack[] the constitutional authority to enter a final judgment on a state law counterclaim that is not resolved in the process of ruling on a creditor’s proof of claim,” even though Congress had classified these types of proceedings as core – and thus authorized federal bankruptcy courts to hear and decide them.