new ExtendedEliminateConditionalNodes(cssTree.getMutatingVisitController(),
getPermutationsConditions(context, cssParsingResult.permutationAxes, logger),
runtimeConditionalBlockCollector.getRuntimeConditionalBlock()).runPass();
new ValidateRuntimeConditionalNode(cssTree.getVisitController(), errorManager,
lenientConversion).runPass();
// Don't continue if errors exist
checkErrors();