Why are you changing the behaviour of the class?
Depending on the problem, a pattern that may fit very well
is to have a base class and several classes that inherit
from it (each one being a "state") and then call bless
to change your object from one class to another, to another
and back to the first.
If you want a particular method to be doing one of several
fixed things, this is probably a much cleaner solution than
what you are using right now.
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