public static PsiReferenceExpression qualifyReference(
     PsiReferenceExpression referenceExpression,
     final PsiMember member,
     @Nullable final PsiClass qualifyingClass)
     throws IncorrectOperationException {
   PsiManager manager = referenceExpression.getManager();
   PsiMethodCallExpression methodCallExpression =
       PsiTreeUtil.getParentOfType(referenceExpression, PsiMethodCallExpression.class, true);
   while ((methodCallExpression) != null) {
     if (HighlightUtil.isSuperOrThisMethodCall(methodCallExpression)) {
       return referenceExpression;
     }
     methodCallExpression =
         PsiTreeUtil.getParentOfType(methodCallExpression, PsiMethodCallExpression.class, true);
   }
   PsiReferenceExpression expressionFromText;
   final PsiElementFactory factory =
       JavaPsiFacade.getInstance(manager.getProject()).getElementFactory();
   if (qualifyingClass == null) {
     PsiClass parentClass = PsiTreeUtil.getParentOfType(referenceExpression, PsiClass.class);
     final PsiClass containingClass = member.getContainingClass();
     if (parentClass != null
         && !InheritanceUtil.isInheritorOrSelf(parentClass, containingClass, true)) {
       while (parentClass != null
           && !InheritanceUtil.isInheritorOrSelf(parentClass, containingClass, true)) {
         parentClass = PsiTreeUtil.getParentOfType(parentClass, PsiClass.class, true);
       }
       LOG.assertTrue(parentClass != null);
       expressionFromText =
           (PsiReferenceExpression)
               factory.createExpressionFromText("A.this." + member.getName(), null);
       ((PsiThisExpression) expressionFromText.getQualifierExpression())
           .getQualifier()
           .replace(factory.createClassReferenceElement(parentClass));
     } else {
       expressionFromText =
           (PsiReferenceExpression)
               factory.createExpressionFromText("this." + member.getName(), null);
     }
   } else {
     expressionFromText =
         (PsiReferenceExpression) factory.createExpressionFromText("A." + member.getName(), null);
     expressionFromText.setQualifierExpression(factory.createReferenceExpression(qualifyingClass));
   }
   CodeStyleManager codeStyleManager = manager.getCodeStyleManager();
   expressionFromText = (PsiReferenceExpression) codeStyleManager.reformat(expressionFromText);
   return (PsiReferenceExpression) referenceExpression.replace(expressionFromText);
 }
 @Override
 public void visitField(@NotNull PsiField field) {
   super.visitField(field);
   if (!field.hasModifierProperty(PsiModifier.PRIVATE)) {
     return;
   }
   if (HighlightUtil.isSerializationImplicitlyUsedField(field)) {
     return;
   }
   final PsiClass containingClass = PsiUtil.getTopLevelClass(field);
   if (!shouldCheckVariable(field, containingClass)) {
     return;
   }
   final ArrayReadWriteVisitor visitor =
       new ArrayReadWriteVisitor(field, !isSimpleArrayExpression(field.getInitializer()));
   containingClass.accept(visitor);
   final boolean written = visitor.isWritten();
   if (!visitor.isReferenced() || written == visitor.isRead()) {
     return;
   }
   registerFieldError(field, Boolean.valueOf(written));
 }