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Changes between Version 3 and Version 4 of Ticket #35971

-              v3
+              v4
 It would be convenient to move that logic into a separate method that could be overridden. For example:
 {{{
 get_username(self, header_name):
+get_username(self, request, header_name):
     return request.META[header_name]
 }}}
 …
 With the proposed change, in my child class I could just say
 {{{
 def get_username(self, header_name):
+def get_username(self, request, header_name):
     if request.META["X-Authenticated"].lower() != "true":
         raise KeyError