@Override
    public void visitReferenceExpression(@NotNull PsiReferenceExpression expression) {
      super.visitReferenceExpression(expression);
      final PsiReferenceParameterList parameterList = expression.getParameterList();
      if (parameterList == null) {
        return;
      }
      if (parameterList.getTypeArguments().length > 0) {
        return;
      }
      final PsiExpression qualifierExpression = PsiUtil.skipParenthesizedExprDown(expression.getQualifierExpression());
      if (!(qualifierExpression instanceof PsiThisExpression thisExpression)) {
        return;
      }
      final PsiJavaCodeReferenceElement qualifier = thisExpression.getQualifier();
      final String referenceName = expression.getReferenceName();
      if (referenceName == null) {
        return;
      }
      if (ignoreAssignments && PsiUtil.isAccessedForWriting(expression)) {
        return;
      }
      final PsiElement parent = expression.getParent();
      if (qualifier == null) {
        if (referenceName.equals(PsiKeyword.YIELD) && parent instanceof PsiMethodCallExpression) {
          // Qualifier might be required since Java 14, so don't warn
          return;
        }
        if (parent instanceof PsiCallExpression) {
          // method calls are always in error
          registerError(qualifierExpression);
          return;
        }
        final PsiElement target = expression.resolve();
        if (!(target instanceof PsiVariable variable)) {
          return;
        }
        if (!DeclarationSearchUtils.variableNameResolvesToTarget(referenceName, variable, expression)) {
          return;
        }
        if (variable instanceof PsiField && HighlightUtil.isIllegalForwardReferenceToField(expression, (PsiField)variable, true) != null) {
          return;
        }
        registerError(thisExpression);
      }
      else {
        final String qualifierName = qualifier.getReferenceName();
        if (qualifierName == null) {
          return;
        }
        if (parent instanceof PsiCallExpression callExpression) {
          final PsiMethod calledMethod = callExpression.resolveMethod();
          if (calledMethod == null) {
            return;
          }
          final String methodName = calledMethod.getName();
          PsiClass parentClass = PsiUtil.getContainingClass(expression);
          final Project project = expression.getProject();
          final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project);
          final PsiResolveHelper resolveHelper = psiFacade.getResolveHelper();
          while (parentClass != null) {
            if (qualifierName.equals(parentClass.getName())) {
              registerError(thisExpression);
            }
            final PsiMethod[] methods = parentClass.findMethodsByName(methodName, true);
            for (PsiMethod method : methods) {
              final PsiClass containingClass = method.getContainingClass();
              if (resolveHelper.isAccessible(method, expression, null)) {
                if (method.hasModifierProperty(PsiModifier.PRIVATE) && !PsiTreeUtil.isAncestor(containingClass, expression, true)) {
                  continue;
                }
                return;
              }
            }
            parentClass = PsiUtil.getContainingClass(parentClass);
          }
        }
        else {
          final PsiElement target = expression.resolve();
          if (!(target instanceof PsiVariable variable)) {
            return;
          }
          if (!DeclarationSearchUtils.variableNameResolvesToTarget(referenceName, variable, expression)) {
            return;
          }
          PsiClass parentClass = PsiUtil.getContainingClass(expression);
          while (parentClass != null) {
            if (qualifierName.equals(parentClass.getName())) {
              registerError(thisExpression);
            }
            final PsiField field = parentClass.findFieldByName(referenceName, true);
            if (field != null) {
              return;
            }
            parentClass = PsiUtil.getContainingClass(parentClass);
          }
        }
      }
    }
@Override
    public void visitReferenceExpression(@NotNull PsiReferenceExpression expression)