Indicates that a spec's feature methods should be run sequentially
in their declared order (even in the presence of a parallel spec runner),
always starting from the first method. If a method fails, the remaining
methods will be skipped. Feature methods declared in super- and subspecs
are not affected.
@Stepwise is useful for specs with
(logical) dependencies between methods. In particular, it helps to avoid
consecutive errors after a method has failed, which makes it easier to
understand what really went wrong.