@Override
    public void visitLiteralExpression(@NotNull PsiLiteralExpression value) {
      super.visitLiteralExpression(value);
      final String text = value.getText();
      if (!PsiKeyword.NULL.equals(text)) {
        return;
      }
      final PsiElement parent = ExpressionUtils.getPassThroughParent(value);
      if (!(parent instanceof PsiReturnStatement) && !(parent instanceof PsiLambdaExpression)) {
        return;
      }
      final PsiElement element = PsiTreeUtil.getParentOfType(value, PsiMethod.class, PsiLambdaExpression.class);
      final PsiMethod method;
      final PsiType returnType;
      final boolean lambda;
      if (element instanceof PsiMethod) {
        method = (PsiMethod)element;
        returnType = method.getReturnType();
        lambda = false;
      }
      else if (element instanceof PsiLambdaExpression) {
        final PsiType functionalInterfaceType = ((PsiLambdaExpression)element).getFunctionalInterfaceType();
        method = LambdaUtil.getFunctionalInterfaceMethod(functionalInterfaceType);
        returnType = LambdaUtil.getFunctionalInterfaceReturnType(functionalInterfaceType);
        lambda = true;
      }
      else {
        return;
      }
      if (method == null || returnType == null) {
        return;
      }

      if (TypeUtils.isOptional(returnType)) {
        registerError(value, value);
        return;
      }
      if (lambda) {
        if (m_ignorePrivateMethods || isInNullableContext(element)) {
          return;
        }
      }
      else {
        if (m_ignorePrivateMethods && method.hasModifierProperty(PsiModifier.PRIVATE)) {
          return;
        }
        final PsiClass containingClass = method.getContainingClass();
        if (containingClass instanceof PsiAnonymousClass) {
          if (m_ignorePrivateMethods || isInNullableContext(containingClass.getParent())) {
            return;
          }
        }
      }
      final Project project = method.getProject();
      final NullabilityAnnotationInfo info = NullableNotNullManager.getInstance(project).findEffectiveNullabilityInfo(method);
      if (info != null && info.getNullability() == Nullability.NULLABLE && !info.isInferred()) {
        return;
      }
      if (DfaPsiUtil.getTypeNullability(returnType) == Nullability.NULLABLE) {
        return;
      }

      if (CollectionUtils.isCollectionClassOrInterface(returnType)) {
        if (m_reportCollectionMethods) {
          registerError(value, value);
        }
      }
      else if (returnType.getArrayDimensions() > 0) {
        if (m_reportArrayMethods) {
          registerError(value, value);
        }
      }
      else if (!returnType.equalsToText("java.lang.Void")){
        if (m_reportObjectMethods) {
          registerError(value, value);
        }
      }
    }
@Override
    public void visitLiteralExpression(@NotNull PsiLiteralExpression value)