Change generated code for 'Check if parameter is null'

Question

Is there any way to change the code generated by resharper for the context action 'check if parameter is null'. I want to change it from

if (item == null) throw new ArgumentNullException("item");

to

Contract.Requires(item != null)

Answer 1

I found the Reference "Add_Edit_Highlighting_Pattern". It seems to be the only way it can be done. You generate the default code, and then add a new pattern rule to change that code into an assert. You cannot actually change the original generated code - or so it seems.

The procedure described in another article "From ArgumentException to CodeContracts using Resharper"