void (List<? extends PsiType> lowerBounds, Collection<? extends PsiType> changedLowerBounds, List<? extends PsiType> upperBounds, Collection<? extends PsiType> changedUpperBounds) { if (changedLowerBounds != null) { upDown(changedLowerBounds, upperBounds); } if (changedUpperBounds != null) { upDown(lowerBounds, changedUpperBounds); } }