Comment #6 on issue 3398 by marcus.denker: SystemNavigation and
SourcedMethodReference
http://code.google.com/p/pharo/issues/detail?id=3398
Checking the source for equality all the time seems to be far too expensive
and not needed.
(reading source from disk...)
As the class does not add any more state, why not just re-use the
definition of the superclass?
(that is, just delete the definition). What is strange is that the
super-superclass defines state
that the equality of the superclass does not bother with.
The whole thing really needs a cleanup...
