Instead of calling the variable name 'event' it is
more appropriate to call these variable names 'outcome' (or
'outcomes') since they represent the 'outcome' (EXECUTED,
or REVERTED) of a atom and are not event types.
To avoid the confusion just relabel these to be outcome(s)
instead.
Change-Id: Ia9caebe279145e4887491151d40a4f59650d40d4