void migrateRootUsageExpression(PsiReference usage, Set<? super PsiElement> processed) {
    final PsiElement ref = usage.getElement();
    if (ref.getLanguage() == JavaLanguage.INSTANCE) {
      final PsiElement element = getContainingStatement(ref);
      if (element != null && !processed.contains(element)) {
        processed.add(element);
        element.accept(new TypeMigrationStatementProcessor(ref, this));
      }
    }
  }
void migrateRootUsageExpression(PsiReference usage, Set<? super PsiElement> processed)