I would like to Alt+Enter on the Update method below (it doesn't exist) to create a new extension method. Is there a way to do this in ReSharper?
List<FootyTeam> existingTeams = GetFootyTeams();
List<XmlTeam> newTeams = GetXmlTeams();
existingTeams.Update(xmlTeams);
(note, I'm new to ReSharper)
I'm affraid this isn't possible at the moment ( even up to 9.1.3 ). There's the Static Method to Extension Method conversion, but not the refactoring you want.
Source: https://www.jetbrains.com/resharper/features/code_refactoring.html