NServiceBus/NServiceBus — comment on commit e46fbb1ff0f844ca957fa173986f5e1ec788aa52
File: src/core/NServiceBus.Saga/Saga.cs line 115
By Bishbulb:

In unit tests, the ExtensionMethods.SetHeaderAction is not configured, which causes this line to throw a null reference exception.

How can this be worked around?