pseudoStyleEntities.get(length - 1);
if (previous instanceof StatefulPseudoClassSet) {
StatefulPseudoClassSet previousPseudoClassSet =
(StatefulPseudoClassSet) previous;
pseudoStyleEntities.remove(length - 1);
classSet = previousPseudoClassSet.combine(classSet);
}
}
// Add the pseudo class set to the end of the list of pseudo style
// entities.