diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/ApproveMerchantCenterLink.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/ApproveMerchantCenterLink.java
index d67d0544fe..53b2559c83 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/ApproveMerchantCenterLink.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/ApproveMerchantCenterLink.java
@@ -108,7 +108,7 @@ private void runExample(
     // Center account with merchantCenterAccountId.
     try (MerchantCenterLinkServiceClient merchantCenterLinkService =
         googleAdsClient.getLatestVersion().createMerchantCenterLinkServiceClient()) {
-      // [START ApproveMerchantCenterLink]
+      // [START approve_merchant_center_link]
       ListMerchantCenterLinksResponse response =
           merchantCenterLinkService.listMerchantCenterLinks(
               ListMerchantCenterLinksRequest.newBuilder()
@@ -118,14 +118,14 @@ private void runExample(
       System.out.printf(
           "%d Merchant Center link(s) found with the following details:%n",
           response.getMerchantCenterLinksCount());
-      // [END ApproveMerchantCenterLink]
+      // [END approve_merchant_center_link]
 
       for (MerchantCenterLink merchantCenterLink : response.getMerchantCenterLinksList()) {
-        // [START ApproveMerchantCenterLink_1]
+        // [START approve_merchant_center_link_1]
         System.out.printf(
             "Link '%s' has status '%s'.%n",
             merchantCenterLink.getResourceName(), merchantCenterLink.getStatus());
-        // [END ApproveMerchantCenterLink_1]
+        // [END approve_merchant_center_link_1]
 
         // Checks if there is a link for the Merchant Center account we are looking for, then only
         // approves the link if it is in a 'PENDING' state.
@@ -151,7 +151,7 @@ private void runExample(
    * @param status the new status to set on the link.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START ApproveMerchantCenterLink_2]
+  // [START approve_merchant_center_link_2]
   private void updateMerchantCenterLinkStatus(
       MerchantCenterLinkServiceClient merchantCenterLinkServiceClient,
       long customerId,
@@ -183,5 +183,5 @@ private void updateMerchantCenterLinkStatus(
         "Updated Merchant Center link with resource name: '%s'.%n",
         merchantCenterLinkResult.getResourceName());
   }
-  // [END ApproveMerchantCenterLink_2]
+  // [END approve_merchant_center_link_2]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/CreateCustomer.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/CreateCustomer.java
index 0bff1179aa..e362853f4f 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/CreateCustomer.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/CreateCustomer.java
@@ -82,7 +82,7 @@ public static void main(String[] args) {
     }
   }
 
-  // [START CreateCustomer]
+  // [START create_customer]
   private void runExample(GoogleAdsClient googleAdsClient, Long managerId) {
     // Formats the current date/time to use as a timestamp in the new customer description.
     String dateTime = ZonedDateTime.now().format(DateTimeFormatter.RFC_1123_DATE_TIME);
@@ -110,5 +110,5 @@ private void runExample(GoogleAdsClient googleAdsClient, Long managerId) {
           response.getResourceName(), managerId);
     }
   }
-  // [END CreateCustomer]
+  // [END create_customer]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/GetChangeSummary.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/GetChangeSummary.java
index bd9a8b30a5..3a0d2562fe 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/GetChangeSummary.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/GetChangeSummary.java
@@ -82,7 +82,7 @@ public static void main(String[] args) {
    * @param googleAdsClient the client instance.
    * @param customerId the customerId for which to retrieve change status.
    */
-  // [START GetAccountChanges]
+  // [START get_account_changes]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
     String query =
         "SELECT change_status.resource_name, "
@@ -123,7 +123,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
       }
     }
   }
-  // [END GetAccountChanges]
+  // [END get_account_changes]
 
   /**
    * Each returned row contains all possible changed fields. This function returns the resource name
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/LinkManagerToClient.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/LinkManagerToClient.java
index f8dc94ad97..f1d9e74350 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/LinkManagerToClient.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/LinkManagerToClient.java
@@ -92,7 +92,7 @@ public static void main(String[] args) throws IOException {
   }
 
   /** Runs the example. */
-  // [START LinkManagerToClient]
+  // [START link_manager_to_client]
   private void runExample(GoogleAdsClient googleAdsClient, long clientCustomerId, long managerId) {
     // This example assumes that the same credentials will work for both customers, but that may not
     // be the case. If you need to use different credentials for each customer, then you may either
@@ -164,5 +164,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long clientCustomerId,
           response.getResults(0).getResourceName());
     }
   }
-  // [END LinkManagerToClient]
+  // [END link_manager_to_client]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/ListAccessibleCustomers.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/ListAccessibleCustomers.java
index 10a0318240..fcb6ee2547 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/ListAccessibleCustomers.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/ListAccessibleCustomers.java
@@ -67,7 +67,7 @@ public static void main(String[] args) {
    *
    * @param client the GoogleAdsClient instance to use.
    */
-  // [START ListAccessibleCustomers]
+  // [START list_accessible_customers]
   private void runExample(GoogleAdsClient client) {
     // Optional: Change credentials to use a different refresh token, to retrieve customers
     //           available for a specific user.
@@ -94,5 +94,5 @@ private void runExample(GoogleAdsClient client) {
       }
     }
   }
-  // [END ListAccessibleCustomers]
+  // [END list_accessible_customers]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/RejectMerchantCenterLink.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/RejectMerchantCenterLink.java
index 54a6256220..4f914ceff8 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/RejectMerchantCenterLink.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/accountmanagement/RejectMerchantCenterLink.java
@@ -144,7 +144,7 @@ private void runExample(
    * @param merchantCenterLink the MerchantCenterLink object to remove.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START RejectMerchantCenterLink]
+  // [START reject_merchant_center_link]
   private void removeMerchantCenterLink(
       MerchantCenterLinkServiceClient merchantCenterLinkServiceClient,
       long customerId,
@@ -163,5 +163,5 @@ private void removeMerchantCenterLink(
     System.out.printf(
         "Removed Merchant Center link with resource name: '%s'.%n", result.getResourceName());
   }
-  // [END RejectMerchantCenterLink]
+  // [END reject_merchant_center_link]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddAdCustomizer.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddAdCustomizer.java
index b1d942021b..06f8e47e5e 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddAdCustomizer.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddAdCustomizer.java
@@ -185,7 +185,7 @@ private void runExample(GoogleAdsClient googleAdsClient, AddAdCustomizerParams p
    * @param feedName the name of the feed to create.
    * @return the resource name of the newly created feed.
    */
-  // [START AddAdCustomizer]
+  // [START add_ad_customizer]
   private String createAdCustomizerFeed(
       GoogleAdsClient googleAdsClient, long customerId, String feedName) {
 
@@ -221,7 +221,7 @@ private String createAdCustomizerFeed(
       return feedResourceName;
     }
   }
-  // [END AddAdCustomizer]
+  // [END add_ad_customizer]
 
   /**
    * Retrieves all the attributes for a feed and returns them in a map using the attribute names as
@@ -232,7 +232,7 @@ private String createAdCustomizerFeed(
    * @param feedResourceName the resource name of the feed.
    * @return the attributes of the feed.
    */
-  // [START AddAdCustomizer_1]
+  // [START add_ad_customizer_1]
   private Map<String, FeedAttribute> getFeedAttributes(
       GoogleAdsClient googleAdsClient, long customerId, String feedResourceName) {
     String query =
@@ -265,7 +265,7 @@ private Map<String, FeedAttribute> getFeedAttributes(
     }
     return feedAttributes;
   }
-  // [END AddAdCustomizer_1]
+  // [END add_ad_customizer_1]
 
   /**
    * Creates a feed mapping and sets the feed as an ad customizer feed.
@@ -275,7 +275,7 @@ private Map<String, FeedAttribute> getFeedAttributes(
    * @param feedResourceName the resource name of the feed.
    * @param feedAttributes the attributes of the feed.
    */
-  // [START AddAdCustomizer_2]
+  // [START add_ad_customizer_2]
   private void createAdCustomizerMapping(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -327,7 +327,7 @@ private void createAdCustomizerMapping(
           "Added feed mapping with resource name %s.%n", response.getResults(0).getResourceName());
     }
   }
-  // [END AddAdCustomizer_2]
+  // [END add_ad_customizer_2]
 
   /**
    * Creates two different feed items to enable two different ad customizations.
@@ -338,7 +338,7 @@ private void createAdCustomizerMapping(
    * @param feedAttributes the attributes of the feed.
    * @return the resource names of the feed items.
    */
-  // [START AddAdCustomizer_3]
+  // [START add_ad_customizer_3]
   private List<String> createFeedItems(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -381,7 +381,7 @@ private List<String> createFeedItems(
       return feedItemResourceNames;
     }
   }
-  // [END AddAdCustomizer_3]
+  // [END add_ad_customizer_3]
 
   /**
    * Helper function to create a FeedItemOperation.
@@ -393,7 +393,7 @@ private List<String> createFeedItems(
    * @param feedAttributes the attributes to be set on the feed.
    * @return a FeedItemOperation to create a feed item.
    */
-  // [START AddAdCustomizer_4]
+  // [START add_ad_customizer_4]
   private FeedItemOperation createFeedItemOperation(
       String name,
       String price,
@@ -428,7 +428,7 @@ private FeedItemOperation createFeedItemOperation(
 
     return FeedItemOperation.newBuilder().setCreate(feedItem).build();
   }
-  // [END AddAdCustomizer_4]
+  // [END add_ad_customizer_4]
 
   /**
    * Restricts the feed items to work only with a specific ad group; this prevents the feed items
@@ -440,7 +440,7 @@ private FeedItemOperation createFeedItemOperation(
    * @param adGroupIds the ad group IDs to bind the feed items to.
    * @param feedItemResourceNames the resource names of the feed items.
    */
-  // [START AddAdCustomizer_5]
+  // [START add_ad_customizer_5]
   private void createFeedItemTargets(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -475,7 +475,7 @@ private void createFeedItemTargets(
       }
     }
   }
-  // [END AddAdCustomizer_5]
+  // [END add_ad_customizer_5]
 
   /**
    * Creates expanded text ads that use the ad customizer feed to populate the placeholders.
@@ -485,7 +485,7 @@ private void createFeedItemTargets(
    * @param adGroupIds the ad group IDs in which to create the ads.
    * @param feedName the name of the feed.
    */
-  // [START AddAdCustomizer_6]
+  // [START add_ad_customizer_6]
   private void createAdsWithCustomizations(
       GoogleAdsClient googleAdsClient, long customerId, List<Long> adGroupIds, String feedName) {
 
@@ -532,5 +532,5 @@ private void createAdsWithCustomizations(
       }
     }
   }
-  // [END AddAdCustomizer_6]
+  // [END add_ad_customizer_6]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddAdGroupBidModifier.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddAdGroupBidModifier.java
index f7335dee8b..5f078fd1c6 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddAdGroupBidModifier.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddAdGroupBidModifier.java
@@ -104,7 +104,7 @@ public static void main(String[] args) {
    * @param bidModifier the bid modifier value to set
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddAdGroupBidModifier]
+  // [START add_ad_group_bid_modifier]
   private void runExample(
       GoogleAdsClient googleAdsClient, long customerId, long adGroupId, double bidModifier) {
 
@@ -135,5 +135,5 @@ private void runExample(
       }
     }
   }
-  // [END AddAdGroupBidModifier]
+  // [END add_ad_group_bid_modifier]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddDynamicPageFeed.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddDynamicPageFeed.java
index 963365eafc..22c80521d7 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddDynamicPageFeed.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddDynamicPageFeed.java
@@ -363,7 +363,7 @@ private static void createFeedItems(
    * @param feedResourceName the resource name of the feed.
    * @param campaignId the campaign ID of the campaign to update.
    */
-  // [START AddDynamicPageFeed_1]
+  // [START add_dynamic_page_feed_1]
   private static void updateCampaignDsaSetting(
       GoogleAdsClient googleAdsClient, long customerId, String feedResourceName, long campaignId) {
     // Retrieves the existing dynamic search ads settings for the campaign.
@@ -397,7 +397,7 @@ private static void updateCampaignDsaSetting(
           "Updated campaign with resource name '%s'.%n", response.getResults(0).getResourceName());
     }
   }
-  // [END AddDynamicPageFeed_1]
+  // [END add_dynamic_page_feed_1]
 
   /**
    * Returns the DSA settings for a campaign. Throws an error if the campaign does not exist or is
@@ -408,7 +408,7 @@ private static void updateCampaignDsaSetting(
    * @param campaignId the campaign ID of the campaign to update.
    * @return the DSA settings for the campaign.
    */
-  // [START AddDynamicPageFeed]
+  // [START add_dynamic_page_feed]
   private static DynamicSearchAdsSetting getDsaSetting(
       GoogleAdsClient googleAdsClient, long customerId, long campaignId) {
     // Creates the query.
@@ -459,7 +459,7 @@ private static DynamicSearchAdsSetting getDsaSetting(
           .getDynamicSearchAdsSetting();
     }
   }
-  // [END AddDynamicPageFeed]
+  // [END add_dynamic_page_feed]
 
   /**
    * Creates an ad group criterion targeting the DSA label.
@@ -469,7 +469,7 @@ private static DynamicSearchAdsSetting getDsaSetting(
    * @param adGroupId the ad group ID.
    * @param dsaPageUrlLabel the label for the DSA page URLs.
    */
-  // [START AddDynamicPageFeed_2]
+  // [START add_dynamic_page_feed_2]
   private static void addDsaTarget(
       GoogleAdsClient googleAdsClient, long customerId, long adGroupId, String dsaPageUrlLabel) {
     String adGroupResourceName = ResourceNames.adGroup(customerId, adGroupId);
@@ -515,5 +515,5 @@ private static void addDsaTarget(
           response.getResults(0).getResourceName());
     }
   }
-  // [END AddDynamicPageFeed_2]
+  // [END add_dynamic_page_feed_2]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddDynamicSearchAds.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddDynamicSearchAds.java
index 179b3624ab..578905b353 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddDynamicSearchAds.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddDynamicSearchAds.java
@@ -164,7 +164,7 @@ private static String addCampaignBudget(GoogleAdsClient googleAdsClient, long cu
    * @param budgetResourceName the campaign budget resource name.
    * @return the campaign resource name.
    */
-  // [START AddDynamicSearchAds]
+  // [START add_dynamic_search_ads]
   private static String addCampaign(
       GoogleAdsClient googleAdsClient, long customerId, String budgetResourceName) {
     // Creates the campaign.
@@ -202,7 +202,7 @@ private static String addCampaign(
       return campaignResourceName;
     }
   }
-  // [END AddDynamicSearchAds]
+  // [END add_dynamic_search_ads]
 
   /**
    * Adds an ad group.
@@ -212,7 +212,7 @@ private static String addCampaign(
    * @param campaignResourceName the campaign resource name.
    * @return the ad group resource name.
    */
-  // [START AddDynamicSearchAds_1]
+  // [START add_dynamic_search_ads_1]
   private static String addAdGroup(
       GoogleAdsClient googleAdsClient, long customerId, String campaignResourceName) {
     // Creates the ad group.
@@ -241,7 +241,7 @@ private static String addAdGroup(
       return adGroupResourceName;
     }
   }
-  // [END AddDynamicSearchAds_1]
+  // [END add_dynamic_search_ads_1]
 
   /**
    * Adds an expanded dynamic search ad.
@@ -250,7 +250,7 @@ private static String addAdGroup(
    * @param customerId the client customer ID.
    * @param adGroupResourceName the ad group resource name.
    */
-  // [START AddDynamicSearchAds_2]
+  // [START add_dynamic_search_ads_2]
   private static void addExpandedDSA(
       GoogleAdsClient googleAdsClient, long customerId, String adGroupResourceName) {
     // Creates an ad group ad.
@@ -283,7 +283,7 @@ private static void addExpandedDSA(
           "Added ad group ad with resource name '%s'.%n", response.getResults(0).getResourceName());
     }
   }
-  // [END AddDynamicSearchAds_2]
+  // [END add_dynamic_search_ads_2]
 
   /**
    * Adds webpage targeting criteria for the DSA.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddSmartDisplayAd.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddSmartDisplayAd.java
index d5e626147c..0e65e535b2 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddSmartDisplayAd.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/AddSmartDisplayAd.java
@@ -177,7 +177,7 @@ private void runExample(
    * @param customerId the client customer ID.
    * @return the campaign budget resource name.
    */
-  // [START AddSmartDisplayAd]
+  // [START add_smart_display_ad]
   private static String createCampaignBudget(GoogleAdsClient googleAdsClient, long customerId) {
     // Creates the budget.
     CampaignBudget campaignBudget =
@@ -204,7 +204,7 @@ private static String createCampaignBudget(GoogleAdsClient googleAdsClient, long
       return budgetResourceName;
     }
   }
-  // [END AddSmartDisplayAd]
+  // [END add_smart_display_ad]
 
   /**
    * Adds a Smart Display campaign.
@@ -214,7 +214,7 @@ private static String createCampaignBudget(GoogleAdsClient googleAdsClient, long
    * @param budgetResourceName the campaign budget resource name.
    * @return the campaign resource name.
    */
-  // [START AddSmartDisplayAd_1]
+  // [START add_smart_display_ad_1]
   private static String createSmartDisplayCampaign(
       GoogleAdsClient googleAdsClient, long customerId, String budgetResourceName) {
     // Creates the campaign.
@@ -253,7 +253,7 @@ private static String createSmartDisplayCampaign(
       return campaignResourceName;
     }
   }
-  // [END AddSmartDisplayAd_1]
+  // [END add_smart_display_ad_1]
 
   /**
    * Adds an ad group.
@@ -263,7 +263,7 @@ private static String createSmartDisplayCampaign(
    * @param campaignResourceName the campaign resource name.
    * @return the ad group resource name.
    */
-  // [START AddSmartDisplayAd_4]
+  // [START add_smart_display_ad_4]
   private static String createAdGroup(
       GoogleAdsClient googleAdsClient, long customerId, String campaignResourceName) {
     // Creates the ad group.
@@ -289,7 +289,7 @@ private static String createAdGroup(
       return adGroupResourceName;
     }
   }
-  // [END AddSmartDisplayAd_4]
+  // [END add_smart_display_ad_4]
 
   /**
    * Adds a responsive display ad, which is a recommended ad type for Smart Display campaigns.
@@ -302,7 +302,7 @@ private static String createAdGroup(
    * @param squareMarketingImageAssetResourceName optional, the resource name of the square
    *     marketing image asset.
    */
-  // [START AddSmartDisplayAd_2]
+  // [START add_smart_display_ad_2]
   private static void createResponsiveDisplayAd(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -367,7 +367,7 @@ private static void createResponsiveDisplayAd(
           "Added ad group ad with resource name '%s'.%n", response.getResults(0).getResourceName());
     }
   }
-  // [END AddSmartDisplayAd_2]
+  // [END add_smart_display_ad_2]
 
   /**
    * Creates an image asset to be used for creating ads.
@@ -378,7 +378,7 @@ private static void createResponsiveDisplayAd(
    * @param imageName the image name.
    * @return the created image asset's resource name.
    */
-  // [START AddSmartDisplayAd_3]
+  // [START add_smart_display_ad_3]
   private static String createImageAsset(
       GoogleAdsClient googleAdsClient, long customerId, String imageUrl, String imageName)
       throws IOException {
@@ -405,5 +405,5 @@ private static String createImageAsset(
       return imageResourceName;
     }
   }
-  // [END AddSmartDisplayAd_3]
+  // [END add_smart_display_ad_3]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/UsePortfolioBiddingStrategy.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/UsePortfolioBiddingStrategy.java
index 634e29bb28..15c9c9ff4a 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/UsePortfolioBiddingStrategy.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/advancedoperations/UsePortfolioBiddingStrategy.java
@@ -133,7 +133,7 @@ private void runExample(
    * @param customerId the client customer ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START UsePortfolioBiddingStrategy_1]
+  // [START use_portfolio_bidding_strategy_1]
   private String createBiddingStrategy(GoogleAdsClient googleAdsClient, long customerId) {
     try (BiddingStrategyServiceClient biddingStrategyServiceClient =
         googleAdsClient.getLatestVersion().createBiddingStrategyServiceClient()) {
@@ -161,7 +161,7 @@ private String createBiddingStrategy(GoogleAdsClient googleAdsClient, long custo
       return mutateBiddingStrategyResult.getResourceName();
     }
   }
-  // [END UsePortfolioBiddingStrategy_1]
+  // [END use_portfolio_bidding_strategy_1]
 
   /**
    * Creates an explicit budget to be used only to create the campaign.
@@ -170,7 +170,7 @@ private String createBiddingStrategy(GoogleAdsClient googleAdsClient, long custo
    * @param customerId the client customer ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START UsePortfolioBiddingStrategy]
+  // [START use_portfolio_bidding_strategy]
   private String createSharedCampaignBudget(GoogleAdsClient googleAdsClient, long customerId) {
     try (CampaignBudgetServiceClient campaignBudgetServiceClient =
         googleAdsClient.getLatestVersion().createCampaignBudgetServiceClient()) {
@@ -199,7 +199,7 @@ private String createSharedCampaignBudget(GoogleAdsClient googleAdsClient, long
       return mutateCampaignBudgetResult.getResourceName();
     }
   }
-  // [END UsePortfolioBiddingStrategy]
+  // [END use_portfolio_bidding_strategy]
 
   /**
    * Create a Campaign with a portfolio bidding strategy.
@@ -224,7 +224,7 @@ private String createCampaignWithBiddingStrategy(
               .setTargetSearchNetwork(true)
               .setTargetContentNetwork(true)
               .build();
-      // [START UsePortfolioBiddingStrategy_2]
+      // [START use_portfolio_bidding_strategy_2]
       Campaign campaign =
           Campaign.newBuilder()
               .setName("Interplanetary Cruise #" + getPrintableDateTime())
@@ -234,7 +234,7 @@ private String createCampaignWithBiddingStrategy(
               .setAdvertisingChannelType(AdvertisingChannelType.SEARCH)
               .setNetworkSettings(networkSettings)
               .build();
-      // [END UsePortfolioBiddingStrategy_2]
+      // [END use_portfolio_bidding_strategy_2]
       // Constructs an operation that will create a campaign.
       CampaignOperation operation = CampaignOperation.newBuilder().setCreate(campaign).build();
       // Sends the operation in a mutate request.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/AddCampaigns.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/AddCampaigns.java
index 64cf911c31..5a029de174 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/AddCampaigns.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/AddCampaigns.java
@@ -102,7 +102,7 @@ public static void main(String[] args) {
    * @return resource name of the newly created budget.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddCampaigns]
+  // [START add_campaigns]
   private static String addCampaignBudget(GoogleAdsClient googleAdsClient, long customerId) {
     CampaignBudget budget =
         CampaignBudget.newBuilder()
@@ -123,7 +123,7 @@ private static String addCampaignBudget(GoogleAdsClient googleAdsClient, long cu
       return budgetResourceName;
     }
   }
-  // [END AddCampaigns]
+  // [END add_campaigns]
 
   /**
    * Runs the example.
@@ -149,7 +149,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
               .setTargetPartnerSearchNetwork(false)
               .build();
 
-      // [START AddCampaigns_1]
+      // [START add_campaigns_1]
       // Creates the campaign.
       Campaign campaign =
           Campaign.newBuilder()
@@ -168,7 +168,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
               .setStartDate(new DateTime().plusDays(1).toString("yyyyMMdd"))
               .setEndDate(new DateTime().plusDays(30).toString("yyyyMMdd"))
               .build();
-      // [END AddCampaigns_1]
+      // [END add_campaigns_1]
 
       CampaignOperation op = CampaignOperation.newBuilder().setCreate(campaign).build();
       operations.add(op);
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/AddExpandedTextAds.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/AddExpandedTextAds.java
index d3ca7e531f..4cbd860292 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/AddExpandedTextAds.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/AddExpandedTextAds.java
@@ -97,7 +97,7 @@ public static void main(String[] args) {
    * @param adGroupId the ad group ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddExpandedTextAds]
+  // [START add_expanded_text_ads]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId, long adGroupId) {
 
     String adGroupResourceName = ResourceNames.adGroup(customerId, adGroupId);
@@ -143,5 +143,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long a
       }
     }
   }
-  // [END AddExpandedTextAds]
+  // [END add_expanded_text_ads]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/UpdateAdGroup.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/UpdateAdGroup.java
index 1d18bc331f..5b175ae236 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/UpdateAdGroup.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/UpdateAdGroup.java
@@ -47,7 +47,7 @@ private static class UpdateAdGroupParams extends CodeSampleParams {
     private Long cpcBidMicroAmount;
   }
 
-  // [START UpdateAdGroup]
+  // [START update_ad_group]
   public static void main(String[] args) {
     UpdateAdGroupParams params = new UpdateAdGroupParams();
     if (!params.parseArguments(args)) {
@@ -90,7 +90,7 @@ public static void main(String[] args) {
       System.exit(1);
     }
   }
-  // [END UpdateAdGroup]
+  // [END update_ad_group]
 
   /**
    * Runs the example.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/UpdateExpandedTextAd.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/UpdateExpandedTextAd.java
index bbff8f098c..69b62857ea 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/UpdateExpandedTextAd.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/basicoperations/UpdateExpandedTextAd.java
@@ -91,7 +91,7 @@ public static void main(String[] args) {
    * @param customerId the customer ID to update.
    * @param adId the ad ID to update.
    */
-  // [START UpdateExpandedTextAd]
+  // [START update_expanded_text_ad]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId, long adId) {
     // Creates an AdOperation to update an ad.
     AdOperation.Builder adOperation = AdOperation.newBuilder();
@@ -128,5 +128,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long a
       }
     }
   }
-  // [END UpdateExpandedTextAd]
+  // [END update_expanded_text_ad]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/AddAccountBudgetProposal.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/AddAccountBudgetProposal.java
index e73f3a2b42..e9e7cd8ddd 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/AddAccountBudgetProposal.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/AddAccountBudgetProposal.java
@@ -85,7 +85,7 @@ public static void main(String[] args) {
     }
   }
 
-  // [START AddAccountBudgetProposal]
+  // [START add_account_budget_proposal]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId, long billingSetupId) {
     // Creates an AccountBudgetProposal. This will be reviewed offline by Google Ads, and if
     // approved will become an AccountBudget.
@@ -135,5 +135,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long b
           "Account budget proposal created: %s.%n", response.getResult().getResourceName());
     }
   }
-  // [END AddAccountBudgetProposal]
+  // [END add_account_budget_proposal]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/GetBillingSetup.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/GetBillingSetup.java
index b258add636..0019c90dc7 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/GetBillingSetup.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/GetBillingSetup.java
@@ -83,7 +83,7 @@ public static void main(String[] args) {
    * @param googleAdsClient the Google Ads API client.
    * @param customerId the customer ID for which to retrieve BillingSetups.
    */
-  // [START GetBillingSetup]
+  // [START get_billing_setup]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
     // Defines a GAQL query to retrieve all billing setup information.
     String searchQuery =
@@ -135,5 +135,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
       }
     }
   }
-  // [END GetBillingSetup]
+  // [END get_billing_setup]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/RemoveBillingSetup.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/RemoveBillingSetup.java
index 34711b2d66..81ee076c95 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/RemoveBillingSetup.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/billing/RemoveBillingSetup.java
@@ -90,7 +90,7 @@ public static void main(String[] args) {
    * @param customerId the customer ID containing the BillingSetup to remove.
    * @param billingSetupId the BillingSetup ID to remove.
    */
-  // [START RemoveBillingSetup]
+  // [START remove_billing_setup]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId, long billingSetupId) {
     // Formats the customerId and billingSetupId into a resource name.
     String billingSetupResourceName = ResourceNames.billingSetup(customerId, billingSetupId);
@@ -110,5 +110,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long b
           response.getResult().getResourceName());
     }
   }
-  // [END RemoveBillingSetup]
+  // [END remove_billing_setup]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCampaignBidModifier.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCampaignBidModifier.java
index c58437d7ee..d449345486 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCampaignBidModifier.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCampaignBidModifier.java
@@ -118,7 +118,7 @@ private void runExample(
     CampaignBidModifierOperation op =
         CampaignBidModifierOperation.newBuilder().setCreate(campaignBidModifier).build();
 
-    // [START MutableResource]
+    // [START mutable_resource]
     // Constructs a request to add the bid modifier.
     MutateCampaignBidModifiersRequest request =
         MutateCampaignBidModifiersRequest.newBuilder()
@@ -151,6 +151,6 @@ private void runExample(
           mutableResource.getBidModifier(),
           mutableResource.getCampaign());
     }
-    // [END MutableResource]
+    // [END mutable_resource]
   }
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCampaignLabels.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCampaignLabels.java
index 4bba4e47a0..5d14fa30e7 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCampaignLabels.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCampaignLabels.java
@@ -100,7 +100,7 @@ public static void main(String[] args) throws IOException {
    * @param labelId the ID of the label to attach to campaigns.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddCampaignLabels]
+  // [START add_campaign_labels]
   private void runExample(
       GoogleAdsClient googleAdsClient, long customerId, List<Long> campaignIds, Long labelId) {
     // Gets the resource name of the label to be added across all given campaigns.
@@ -131,5 +131,5 @@ private void runExample(
       }
     }
   }
-  // [END AddCampaignLabels]
+  // [END add_campaign_labels]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCompleteCampaignsUsingBatchJob.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCompleteCampaignsUsingBatchJob.java
index bbd03829e5..ea652507f7 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCompleteCampaignsUsingBatchJob.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/AddCompleteCampaignsUsingBatchJob.java
@@ -152,7 +152,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
    * @param customerId the client customer ID.
    * @return the resource name of the created mutate job.
    */
-  // [START AddCompleteCampaignsUsingBatchJob]
+  // [START add_complete_campaigns_using_batch_job]
   private String createBatchJob(BatchJobServiceClient batchJobServiceClient, long customerId) {
     BatchJobOperation operation =
         BatchJobOperation.newBuilder().setCreate(BatchJob.newBuilder().build()).build();
@@ -165,7 +165,7 @@ private String createBatchJob(BatchJobServiceClient batchJobServiceClient, long
 
     return batchJobResourceName;
   }
-  // [END AddCompleteCampaignsUsingBatchJob]
+  // [END add_complete_campaigns_using_batch_job]
 
   /**
    * Adds all mutate job operations to the mutate job. As this is the first time for this mutate
@@ -177,7 +177,7 @@ private String createBatchJob(BatchJobServiceClient batchJobServiceClient, long
    * @param batchJobResourceName the resource name of mutate job to which the mutate job operations
    *     will be added.
    */
-  // [START AddCompleteCampaignsUsingBatchJob_1]
+  // [START add_complete_campaigns_using_batch_job_1]
   private void addAllBatchJobOperations(
       BatchJobServiceClient batchJobServiceClient, long customerId, String batchJobResourceName) {
     AddBatchJobOperationsResponse response =
@@ -194,7 +194,7 @@ private void addAllBatchJobOperations(
         "Next sequence token for adding next operations is '%s'.%n",
         response.getNextSequenceToken());
   }
-  // [END AddCompleteCampaignsUsingBatchJob_1]
+  // [END add_complete_campaigns_using_batch_job_1]
 
   /**
    * Requests the API to run the mutate job for executing all uploaded mutate job operations.
@@ -203,7 +203,7 @@ private void addAllBatchJobOperations(
    * @param batchJobResourceName the resource name of mutate job to be run.
    * @return the operation response from running mutate job.
    */
-  // [START AddCompleteCampaignsUsingBatchJob_2]
+  // [START add_complete_campaigns_using_batch_job_2]
   private OperationFuture runBatchJob(
       BatchJobServiceClient batchJobServiceClient, String batchJobResourceName) {
     OperationFuture operationResponse =
@@ -213,7 +213,7 @@ private OperationFuture runBatchJob(
 
     return operationResponse;
   }
-  // [END AddCompleteCampaignsUsingBatchJob_2]
+  // [END add_complete_campaigns_using_batch_job_2]
 
   /**
    * Polls the server until the mutate job execution finishes by setting the total time to wait
@@ -221,7 +221,7 @@ private OperationFuture runBatchJob(
    *
    * @param operationResponse the operation response used to poll the server.
    */
-  // [START AddCompleteCampaignsUsingBatchJob_3]
+  // [START add_complete_campaigns_using_batch_job_3]
   private void pollBatchJob(OperationFuture operationResponse) {
     try {
       operationResponse.get(MAX_TOTAL_POLL_INTERVAL_SECONDS, TimeUnit.SECONDS);
@@ -230,7 +230,7 @@ private void pollBatchJob(OperationFuture operationResponse) {
       System.exit(1);
     }
   }
-  // [END AddCompleteCampaignsUsingBatchJob_3]
+  // [END add_complete_campaigns_using_batch_job_3]
 
   /**
    * Prints all the results from running the mutate job.
@@ -238,7 +238,7 @@ private void pollBatchJob(OperationFuture operationResponse) {
    * @param batchJobServiceClient the mutate job service client.
    * @param batchJobResourceName the resource name of mutate job to get its results.
    */
-  // [START AddCompleteCampaignsUsingBatchJob_4]
+  // [START add_complete_campaigns_using_batch_job_4]
   private void fetchAndPrintResults(
       BatchJobServiceClient batchJobServiceClient, String batchJobResourceName) {
     System.out.printf(
@@ -266,7 +266,7 @@ private void fetchAndPrintResults(
               : batchJobResult.getMutateOperationResponse().getResponseCase());
     }
   }
-  // [END AddCompleteCampaignsUsingBatchJob_4]
+  // [END add_complete_campaigns_using_batch_job_4]
 
   /**
    * Builds all operations for creating a complete campaign and return an array of their
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/GetCampaignsByLabel.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/GetCampaignsByLabel.java
index 121e1bf214..8023db7f43 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/GetCampaignsByLabel.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/campaignmanagement/GetCampaignsByLabel.java
@@ -89,7 +89,7 @@ public static void main(String[] args) throws IOException {
    * @param labelId the label ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START GetCampaignsByLabel]
+  // [START get_campaigns_by_label]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId, long labelId) {
     try (GoogleAdsServiceClient googleAdsServiceClient =
         googleAdsClient.getLatestVersion().createGoogleAdsServiceClient()) {
@@ -124,5 +124,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long l
       }
     }
   }
-  // [END GetCampaignsByLabel]
+  // [END get_campaigns_by_label]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandleExpandedTextAdPolicyViolations.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandleExpandedTextAdPolicyViolations.java
index 463b761634..bee6e1de5e 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandleExpandedTextAdPolicyViolations.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandleExpandedTextAdPolicyViolations.java
@@ -148,7 +148,7 @@ public void runExample(GoogleAdsClient googleAdsClient, long customerId, long ad
    * @param gae the Google Ads exception.
    * @return the ignorable policy topics.
    */
-  // [START HandleExpandedTextAdPolicyViolations]
+  // [START handle_expanded_text_ad_policy_violations]
   private List<String> fetchIgnorablePolicyTopics(GoogleAdsException gae) {
     System.out.println("Google Ads failure details:");
 
@@ -187,7 +187,7 @@ private List<String> fetchIgnorablePolicyTopics(GoogleAdsException gae) {
     }
     return ignorableTopics;
   }
-  // [END HandleExpandedTextAdPolicyViolations]
+  // [END handle_expanded_text_ad_policy_violations]
 
   /**
    * Sends exemption requests for creating an expanded text ad.
@@ -197,7 +197,7 @@ private List<String> fetchIgnorablePolicyTopics(GoogleAdsException gae) {
    * @param operation operation which generated original violations.
    * @param customerID the customer ID to operate on.
    */
-  // [START HandleExpandedTextAdPolicyViolations_1]
+  // [START handle_expanded_text_ad_policy_violations_1]
   private void requestExemption(
       List<String> ignorablePolicyTopics,
       AdGroupAdServiceClient client,
@@ -225,5 +225,5 @@ private void requestExemption(
             + " violation exemption.%n",
         response.getResults(0).getResourceName());
   }
-  // [END HandleExpandedTextAdPolicyViolations_1]
+  // [END handle_expanded_text_ad_policy_violations_1]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandleKeywordPolicyViolations.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandleKeywordPolicyViolations.java
index ebb2867e8a..cc2179624e 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandleKeywordPolicyViolations.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandleKeywordPolicyViolations.java
@@ -158,7 +158,7 @@ private void runExample(
         errorCount = e.getGoogleAdsFailure().getErrorsCount();
       }
 
-      // [START HandleKeywordPolicyViolations_1]
+      // [START handle_keyword_policy_violations_1]
       // Tries sending exemption requests for creating the keyword. However, if your keyword
       // contains many policy violations, but not all of them are exemptible, the request will not
       // be sent.
@@ -178,7 +178,7 @@ private void runExample(
                 + "policy violation exemptions.%n",
             response.getResults(0).getResourceName());
       } else {
-        // [END HandleKeywordPolicyViolations_1]
+        // [END handle_keyword_policy_violations_1]
         System.out.println("No exemption request was sent because either:");
         System.out.println("1) your keyword contained some non-exemptible policy violations, or");
         System.out.println("2) other non-policy related errors were thrown");
@@ -192,7 +192,7 @@ private void runExample(
    * @param googleAdsException the exception to extract the keys from.
    * @return the list of extracted exemptible keys.
    */
-  // [START HandleKeywordPolicyViolations]
+  // [START handle_keyword_policy_violations]
   private List<PolicyViolationKey> extractExemptiblePolicyViolationKeys(
       GoogleAdsException googleAdsException) {
     List<PolicyViolationKey> exemptibleKeys = new ArrayList<>();
@@ -220,5 +220,5 @@ private List<PolicyViolationKey> extractExemptiblePolicyViolationKeys(
     }
     return exemptibleKeys;
   }
-  // [END HandleKeywordPolicyViolations]
+  // [END handle_keyword_policy_violations]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandlePartialFailure.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandlePartialFailure.java
index 79de79c28b..ab482bcf00 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandlePartialFailure.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/errorhandling/HandlePartialFailure.java
@@ -116,7 +116,7 @@ public void runExample(GoogleAdsClient googleAdsClient, long customerId, long ca
    * Attempts to create 3 ad groups with partial failure enabled. One of the ad groups will succeed,
    * while the other will fail.
    */
-  // [START HandlePartialFailure]
+  // [START handle_partial_failure]
   private MutateAdGroupsResponse createAdGroups(
       GoogleAdsClient googleAdsClient, long customerId, long campaignId) {
     // This AdGroup should be created successfully - assuming the campaign in the params exists.
@@ -154,17 +154,17 @@ private MutateAdGroupsResponse createAdGroups(
               .build());
     }
   }
-  // [END HandlePartialFailure]
+  // [END handle_partial_failure]
 
   /** Inspects a response to check for presence of partial failure errors. */
-  // [START HandlePartialFailure_1]
+  // [START handle_partial_failure_1]
   private boolean checkIfPartialFailureErrorExists(MutateAdGroupsResponse response) {
     return response.hasPartialFailureError();
   }
-  // [END HandlePartialFailure_1]
+  // [END handle_partial_failure_1]
 
   /** Displays the result from the mutate operation. */
-  // [START HandlePartialFailure_2]
+  // [START handle_partial_failure_2]
   private void printResults(MutateAdGroupsResponse response) throws InvalidProtocolBufferException {
     int operationIndex = 0;
     for (MutateAdGroupResult result : response.getResultsList()) {
@@ -182,5 +182,5 @@ private void printResults(MutateAdGroupsResponse response) throws InvalidProtoco
       ++operationIndex;
     }
   }
-  // [END HandlePartialFailure_2]
+  // [END handle_partial_failure_2]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddGeoTarget.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddGeoTarget.java
index 33489fd4bb..25f8887394 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddGeoTarget.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddGeoTarget.java
@@ -52,7 +52,7 @@ private static class AddGeoTargetParams extends CodeSampleParams {
     private Long geoTargetConstantId = GEO_TARGET_CONSTANT_ID;
   }
 
-  // [START AddGeoTarget]
+  // [START add_geo_target]
   public static void main(String[] args) {
     AddGeoTargetParams params = new AddGeoTargetParams();
     if (!params.parseArguments(args)) {
@@ -97,7 +97,7 @@ public static void main(String[] args) {
       System.exit(1);
     }
   }
-  // [END AddGeoTarget]
+  // [END add_geo_target]
 
   /**
    * Runs the example.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddGoogleMyBusinessLocationExtensions.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddGoogleMyBusinessLocationExtensions.java
index 384aefa37e..e94d1f0e5f 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddGoogleMyBusinessLocationExtensions.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddGoogleMyBusinessLocationExtensions.java
@@ -161,7 +161,7 @@ private void runExample(
       placesLocationFeedData.setBusinessAccountId(businessAccountIdentifier);
     }
 
-    // [START AddGoogleMyBusinessLocationExtensions]
+    // [START add_google_my_business_location_extensions]
     // Creates a feed that will sync to the Google My Business account. Do not add FeedAttributes to
     // this object as Google Ads will add them automatically because this will be a system generated
     // feed.
@@ -175,9 +175,9 @@ private void runExample(
             .setOrigin(FeedOrigin.GOOGLE);
 
     FeedOperation operation = FeedOperation.newBuilder().setCreate(gmbFeed).build();
-    // [END AddGoogleMyBusinessLocationExtensions]
+    // [END add_google_my_business_location_extensions]
 
-    // [START AddGoogleMyBusinessLocationExtensions_1]
+    // [START add_google_my_business_location_extensions_1]
     try (FeedServiceClient feedServiceClient =
         googleAdsClient.getLatestVersion().createFeedServiceClient()) {
       // Adds the feed. Since it is a system generated feed, Google Ads will automatically:
@@ -188,9 +188,9 @@ private void runExample(
           feedServiceClient.mutateFeeds(Long.toString(customerId), ImmutableList.of(operation));
       String gmbFeedResourceName = response.getResults(0).getResourceName();
       System.out.printf("GMB feed created with resource name: %s%n", gmbFeedResourceName);
-      // [END AddGoogleMyBusinessLocationExtensions_1]
+      // [END add_google_my_business_location_extensions_1]
 
-      // [START AddGoogleMyBusinessLocationExtensions_2]
+      // [START add_google_my_business_location_extensions_2]
       // Adds a CustomerFeed that associates the feed with this customer for
       // the LOCATION placeholder type.
       CustomerFeed customerFeed =
@@ -212,9 +212,9 @@ private void runExample(
 
       CustomerFeedOperation customerFeedOperation =
           CustomerFeedOperation.newBuilder().setCreate(customerFeed).build();
-      // [END AddGoogleMyBusinessLocationExtensions_2]
+      // [END add_google_my_business_location_extensions_2]
 
-      // [START AddGoogleMyBusinessLocationExtensions_3]
+      // [START add_google_my_business_location_extensions_3]
       try (CustomerFeedServiceClient customerFeedServiceClient =
           googleAdsClient.getLatestVersion().createCustomerFeedServiceClient()) {
 
@@ -249,7 +249,7 @@ private void runExample(
             Thread.sleep(sleepSeconds * 1000);
           }
         } while (numberOfAttempts < MAX_CUSTOMER_FEED_ADD_ATTEMPTS && addedCustomerFeed == null);
-        // [END AddGoogleMyBusinessLocationExtensions_3]
+        // [END add_google_my_business_location_extensions_3]
 
         if (addedCustomerFeed == null) {
           throw new RuntimeException(
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddSitelinks.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddSitelinks.java
index 0d9285154b..39f65d033e 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddSitelinks.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/AddSitelinks.java
@@ -106,7 +106,7 @@ public static void main(String[] args) throws IOException {
    * @param campaignId the campaign ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddSitelinks]
+  // [START add_sitelinks]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId, long campaignId) {
     String campaignResourceName = ResourceNames.campaign(customerId, campaignId);
 
@@ -139,7 +139,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long c
       }
     }
   }
-  // [END AddSitelinks]
+  // [END add_sitelinks]
 
   /**
    * Creates a list of ExtensionFeedItems.
@@ -148,7 +148,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long c
    * @param customerId the client customer ID.
    * @param campaignResourceName the resource name of the campaign to target.
    */
-  // [START AddSitelinks_1]
+  // [START add_sitelinks_1]
   private static List<String> createExtensionFeedItems(
       GoogleAdsClient googleAdsClient, long customerId, String campaignResourceName) {
     SitelinkFeedItem sitelinkFeedItem1 =
@@ -260,7 +260,7 @@ private static List<String> createExtensionFeedItems(
       return resourceNames;
     }
   }
-  // [END AddSitelinks_1]
+  // [END add_sitelinks_1]
 
   /**
    * Creates a new SitelinkFeedItem with the specified attributes.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/RemoveEntireSitelinkCampaignExtensionSetting.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/RemoveEntireSitelinkCampaignExtensionSetting.java
index 7911b9cc1d..7dd3abc169 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/RemoveEntireSitelinkCampaignExtensionSetting.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/RemoveEntireSitelinkCampaignExtensionSetting.java
@@ -101,7 +101,7 @@ public static void main(String[] args) {
   }
 
   /** Runs the example. */
-  // [START RemoveEntireSitelinkCampaignExtensionSetting]
+  // [START remove_entire_sitelink_campaign_extension_setting]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId, long campaignId) {
 
     // Retrieves all sitelink extension feed items for a customer and campaign.
@@ -163,10 +163,10 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long c
       }
     }
   }
-  // [END RemoveEntireSitelinkCampaignExtensionSetting]
+  // [END remove_entire_sitelink_campaign_extension_setting]
 
   /** Retrieves all sitelink extension feed items for a customer + campaign combination. */
-  // [START RemoveEntireSitelinkCampaignExtensionSetting_1]
+  // [START remove_entire_sitelink_campaign_extension_setting_1]
   private List<String> getSitelinkExtensionFeedItems(
       GoogleAdsClient googleAdsClient, long customerId, long campaignId) {
     // Defines a query to retrieve the sitelink extension feed items.
@@ -208,5 +208,5 @@ private List<String> getSitelinkExtensionFeedItems(
       return result;
     }
   }
-  // [END RemoveEntireSitelinkCampaignExtensionSetting_1]
+  // [END remove_entire_sitelink_campaign_extension_setting_1]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/UpdateSitelink.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/UpdateSitelink.java
index 339291dc6e..d544f3facb 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/UpdateSitelink.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/UpdateSitelink.java
@@ -98,7 +98,7 @@ public static void main(String[] args) {
    * @param sitelinkText the new sitelink text to update to.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START UpdateSitelink]
+  // [START update_sitelink]
   private void runExample(
       GoogleAdsClient googleAdsClient, long customerId, long feedItemId, String sitelinkText) {
     try (ExtensionFeedItemServiceClient extensionFeedItemServiceClient =
@@ -130,5 +130,5 @@ private void runExample(
       }
     }
   }
-  // [END UpdateSitelink]
+  // [END update_sitelink]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/UpdateSitelinkCampaignExtensionSetting.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/UpdateSitelinkCampaignExtensionSetting.java
index 3f8d0b6319..b403d243a0 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/UpdateSitelinkCampaignExtensionSetting.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/extensions/UpdateSitelinkCampaignExtensionSetting.java
@@ -97,7 +97,7 @@ public static void main(String[] args) {
   }
 
   /** Runs the example. */
-  // [START UpdateSitelinkCampaignExtensionSetting]
+  // [START update_sitelink_campaign_extension_setting]
   private void runExample(
       GoogleAdsClient googleAdsClient, long customerId, long campaignId, List<Long> feedItemIds) {
     // Converts the feed item IDs into resource names.
@@ -136,5 +136,5 @@ private void runExample(
           "Updated a campaign extension setting with resource name: '%s'.%n", resourceName);
     }
   }
-  // [END UpdateSitelinkCampaignExtensionSetting]
+  // [END update_sitelink_campaign_extension_setting]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/feeds/RemoveFlightsFeedItemAttributeValue.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/feeds/RemoveFlightsFeedItemAttributeValue.java
index eda5191485..780283ab0e 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/feeds/RemoveFlightsFeedItemAttributeValue.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/feeds/RemoveFlightsFeedItemAttributeValue.java
@@ -141,7 +141,7 @@ private void runExample(
    * @param feedItemId ID of the feed item to be updated.
    * @param flightPlaceholderField the placeholder type for the attribute to be removed.
    */
-  // [START RemoveFlightsFeedItemAttributeValue_1]
+  // [START remove_flights_feed_item_attribute_value_1]
   private void removeAttributeFromFeedItem(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -185,7 +185,7 @@ private void removeAttributeFromFeedItem(
       }
     }
   }
-  // [END RemoveFlightsFeedItemAttributeValue_1]
+  // [END remove_flights_feed_item_attribute_value_1]
 
   /**
    * Removes a feed item attribute value.
@@ -196,7 +196,7 @@ private void removeAttributeFromFeedItem(
    * @param feedItemResourceName the resource name of the feedItem to be updated.
    * @param flightPlaceholderField the placeholder type for the attribute to be removed.
    */
-  // [START RemoveFlightsFeedItemAttributeValue]
+  // [START remove_flights_feed_item_attribute_value]
   private FeedItem removeAttributeValueFromFeedItem(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -220,7 +220,7 @@ private FeedItem removeAttributeValueFromFeedItem(
     // be removed.
     return feedItem.toBuilder().removeAttributeValues(attributeIndex).build();
   }
-  // [END RemoveFlightsFeedItemAttributeValue]
+  // [END remove_flights_feed_item_attribute_value]
 
   /**
    * Retrieves a feed item and its attribute values given a resource name.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/feeds/UpdateFlightsFeedItemStringAttributeValue.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/feeds/UpdateFlightsFeedItemStringAttributeValue.java
index cddf064820..2a31686c02 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/feeds/UpdateFlightsFeedItemStringAttributeValue.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/feeds/UpdateFlightsFeedItemStringAttributeValue.java
@@ -150,7 +150,7 @@ private void runExample(
    * @param flightPlaceholderField the placeholder type for the attribute to be removed.
    * @param attributeValue String value with which to update the FeedAttributeValue.
    */
-  // [START UpdateFlightsFeedItemStringAttributeValue]
+  // [START update_flights_feed_item_string_attribute_value]
   private void updateFeedItem(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -213,7 +213,7 @@ private void updateFeedItem(
       }
     }
   }
-  // [END UpdateFlightsFeedItemStringAttributeValue]
+  // [END update_flights_feed_item_string_attribute_value]
 
   /**
    * Retrieves a feed item and its attribute values given a resource name.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/hotelads/AddHotelAd.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/hotelads/AddHotelAd.java
index 6f0b087b8a..ec045509f7 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/hotelads/AddHotelAd.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/hotelads/AddHotelAd.java
@@ -132,7 +132,7 @@ public static void main(String[] args) {
    *     using the Percent CPC bidding strategy.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddHotelAd]
+  // [START add_hotel_ad]
   private void runExample(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -157,7 +157,7 @@ private void runExample(
     // Creates a hotel ad group ad.
     addHotelAdGroupAd(googleAdsClient, customerId, adGroupResourceName);
   }
-  // [END AddHotelAd]
+  // [END add_hotel_ad]
 
   /**
    * Creates a new campaign budget in the specified client account.
@@ -216,7 +216,7 @@ private String addHotelCampaign(
     NetworkSettings networkSettings =
         NetworkSettings.newBuilder().setTargetGoogleSearch(true).build();
 
-    // [START AddHotelAd_1]
+    // [START add_hotel_ad_1]
     // Creates the campaign.
     Campaign campaign =
         Campaign.newBuilder()
@@ -238,7 +238,7 @@ private String addHotelCampaign(
             // Adds the networkSettings configured above.
             .setNetworkSettings(networkSettings)
             .build();
-    // [END AddHotelAd_1]
+    // [END add_hotel_ad_1]
 
     // Creates a campaign operation.
     CampaignOperation operation = CampaignOperation.newBuilder().setCreate(campaign).build();
@@ -266,7 +266,7 @@ private String addHotelCampaign(
    * @return resource name of the newly created ad group.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddHotelAd_2]
+  // [START add_hotel_ad_2]
   private String addHotelAdGroup(
       GoogleAdsClient googleAdsClient, long customerId, String campaignResourceName) {
     // Creates an ad group.
@@ -296,7 +296,7 @@ private String addHotelAdGroup(
       return mutateAdGroupResult.getResourceName();
     }
   }
-  // [END AddHotelAd_2]
+  // [END add_hotel_ad_2]
 
   /**
    * Creates a new hotel ad group ad in the specified ad group.
@@ -308,7 +308,7 @@ private String addHotelAdGroup(
    * @return resource name of the newly created ad group ad.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddHotelAd_3]
+  // [START add_hotel_ad_3]
   private String addHotelAdGroupAd(
       GoogleAdsClient googleAdsClient, long customerId, String adGroupResourceName) {
     // Creates a new hotel ad.
@@ -342,5 +342,5 @@ private String addHotelAdGroupAd(
       return mutateAdGroupAdResult.getResourceName();
     }
   }
-  // [END AddHotelAd_3]
+  // [END add_hotel_ad_3]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/hotelads/AddHotelListingGroupTree.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/hotelads/AddHotelListingGroupTree.java
index 97e8af4ef4..d51a5f1e80 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/hotelads/AddHotelListingGroupTree.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/hotelads/AddHotelListingGroupTree.java
@@ -213,7 +213,7 @@ private static String addRootNode(
    * @return the "other hotel classes" node's resource name, which serves as a parent node for the
    *     next level.
    */
-  // [START addLevel1Nodes]
+  // [START add_level1_nodes]
   private static String addLevel1Nodes(
       long customerId,
       long adGroupId,
@@ -264,7 +264,7 @@ private static String addLevel1Nodes(
 
     return otherHotelsAdGroupCriterion.getResourceName();
   }
-  // [END addLevel1Nodes]
+  // [END add_level1_nodes]
 
   /**
    * Creates child nodes of level 2, partitioned by the country region.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/misc/SetCustomClientTimeouts.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/misc/SetCustomClientTimeouts.java
index 0e98a8d0f5..8d75b867ce 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/misc/SetCustomClientTimeouts.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/misc/SetCustomClientTimeouts.java
@@ -94,7 +94,7 @@ private void runExample(GoogleAdsClient googleAdsClient, Long customerId) {
   }
 
   /** Makes a server streaming call using a custom client timeout. */
-  // [START SetCustomClientTimeouts]
+  // [START set_custom_client_timeouts]
   private void makeServerStreamingCall(GoogleAdsClient googleAdsClient, Long customerId) {
     StringBuilder output = new StringBuilder();
     try (GoogleAdsServiceClient serviceClient =
@@ -129,10 +129,10 @@ private void makeServerStreamingCall(GoogleAdsClient googleAdsClient, Long custo
       System.out.printf("All campaign IDs retrieved: %s.%n", output.toString());
     }
   }
-  // [END SetCustomClientTimeouts]
+  // [END set_custom_client_timeouts]
 
   /** Makes an unary call using a custom client timeout. */
-  // [START SetCustomClientTimeouts_1]
+  // [START set_custom_client_timeouts_1]
   private void makeUnaryCall(GoogleAdsClient googleAdsClient, Long customerId) {
     StringBuilder output = new StringBuilder();
     try (GoogleAdsServiceClient serviceClient =
@@ -165,5 +165,5 @@ private void makeUnaryCall(GoogleAdsClient googleAdsClient, Long customerId) {
       System.out.printf("All campaign IDs retrieved: %s.%n", output.toString());
     }
   }
-  // [END SetCustomClientTimeouts_1]
+  // [END set_custom_client_timeouts_1]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/misc/UploadImageAsset.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/misc/UploadImageAsset.java
index fabe4f5b8e..f69e740a97 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/misc/UploadImageAsset.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/misc/UploadImageAsset.java
@@ -90,7 +90,7 @@ public static void main(String[] args) throws IOException {
    * @param customerId the client customer ID.
    * @throws IOException if there are errors related to image processing.
    */
-  // [START UploadImageAsset]
+  // [START upload_image_asset]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) throws IOException {
     byte[] imageData = ByteStreams.toByteArray(new URL(IMAGE_URL).openStream());
 
@@ -124,5 +124,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) throws
           response.getResults(0).getResourceName());
     }
   }
-  // [END UploadImageAsset]
+  // [END upload_image_asset]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/AddKeywordPlan.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/AddKeywordPlan.java
index 66790961c3..bf0d3a8e37 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/AddKeywordPlan.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/AddKeywordPlan.java
@@ -112,7 +112,7 @@ public static void main(String[] args) {
    * @param googleAdsClient the Google Ads API client.
    * @param customerId the client customer ID.
    */
-  // [START AddKeywordPlan]
+  // [START add_keyword_plan]
   private void runExample(GoogleAdsClient googleAdsClient, Long customerId) {
     String keywordPlanResource = createKeywordPlan(googleAdsClient, customerId);
     String planCampaignResource =
@@ -312,5 +312,5 @@ private void createKeywordPlanCampaignKeywords(
       System.out.printf("Created negative keyword for keyword plan: %s%n", resourceName);
     }
   }
-  // [END AddKeywordPlan]
+  // [END add_keyword_plan]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GenerateForecastMetrics.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GenerateForecastMetrics.java
index afc17f64f8..34f9532c71 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GenerateForecastMetrics.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GenerateForecastMetrics.java
@@ -93,7 +93,7 @@ public static void main(String[] args) {
    * @param customerId the client customer ID.
    * @param planId the plan ID.
    */
-  // [START GenerateForecastMetrics]
+  // [START generate_forecast_metrics]
   private void runExample(GoogleAdsClient googleAdsClient, Long customerId, Long planId) {
     String planResourceName = ResourceNames.keywordPlan(customerId, planId);
 
@@ -110,5 +110,5 @@ private void runExample(GoogleAdsClient googleAdsClient, Long customerId, Long p
       }
     }
   }
-  // [END GenerateForecastMetrics]
+  // [END generate_forecast_metrics]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GenerateKeywordIdeas.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GenerateKeywordIdeas.java
index 4448635c1f..c9df4393c2 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GenerateKeywordIdeas.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GenerateKeywordIdeas.java
@@ -134,7 +134,7 @@ public static void main(String[] args) throws IOException {
    * @throws IllegalArgumentException if {@code keywords} is empty and {@code pageUrl} is null.
    * @throws Exception if the example failed due to other errors.
    */
-  // [START GenerateKeywordIdeas]
+  // [START generate_keyword_ideas]
   private void runExample(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -189,5 +189,5 @@ private void runExample(
       }
     }
   }
-  // [END GenerateKeywordIdeas]
+  // [END generate_keyword_ideas]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GetAdGroupCriterionCpcBidSimulations.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GetAdGroupCriterionCpcBidSimulations.java
index bc726a9719..f6df50f3d9 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GetAdGroupCriterionCpcBidSimulations.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/planning/GetAdGroupCriterionCpcBidSimulations.java
@@ -95,7 +95,7 @@ public static void main(String[] args) {
    * @param adGroupId the ad group ID to get the ad group criterion CPC bid simulations for.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START GetAdGroupCriterionCpcBidSimulations]
+  // [START get_ad_group_criterion_cpc_bid_simulations]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId, long adGroupId) {
     try (GoogleAdsServiceClient googleAdsServiceClient =
         googleAdsClient.getLatestVersion().createGoogleAdsServiceClient()) {
@@ -149,5 +149,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long a
       }
     }
   }
-  // [END GetAdGroupCriterionCpcBidSimulations]
+  // [END get_ad_group_criterion_cpc_bid_simulations]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/recommendations/ApplyRecommendation.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/recommendations/ApplyRecommendation.java
index 5e64793a0d..0977ba93bc 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/recommendations/ApplyRecommendation.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/recommendations/ApplyRecommendation.java
@@ -99,7 +99,7 @@ public static void main(String[] args) throws IOException {
    * @param recommendationId the recommendation ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START ApplyRecommendation]
+  // [START apply_recommendation]
   private void runExample(
       GoogleAdsClient googleAdsClient, long customerId, String recommendationId) {
     String recommendationResourceName = ResourceNames.recommendation(customerId, recommendationId);
@@ -130,5 +130,5 @@ private void runExample(
       }
     }
   }
-  // [END ApplyRecommendation]
+  // [END apply_recommendation]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/recommendations/GetTextAdRecommendations.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/recommendations/GetTextAdRecommendations.java
index 188e93149c..dd892e8ca3 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/recommendations/GetTextAdRecommendations.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/recommendations/GetTextAdRecommendations.java
@@ -87,7 +87,7 @@ public static void main(String[] args) throws IOException {
    * @param customerId the client customer ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START GetTextAdRecommendations]
+  // [START get_text_ad_recommendations]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
     try (GoogleAdsServiceClient googleAdsServiceClient =
         googleAdsClient.getLatestVersion().createGoogleAdsServiceClient()) {
@@ -136,5 +136,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
       }
     }
   }
-  // [END GetTextAdRecommendations]
+  // [END get_text_ad_recommendations]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddCombinedRuleUserList.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddCombinedRuleUserList.java
index 1ff94f80a0..4f05024d56 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddCombinedRuleUserList.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddCombinedRuleUserList.java
@@ -98,7 +98,7 @@ public static void main(String[] args) {
    * @param customerId the client customer ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddCombinedRuleUserList]
+  // [START add_combined_rule_user_list]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
     String urlString = "url__";
 
@@ -189,5 +189,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
       System.out.printf("Created user list with resource name '%s'.%n", userListResourceName);
     }
   }
-  // [END AddCombinedRuleUserList]
+  // [END add_combined_rule_user_list]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddConversionAction.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddConversionAction.java
index 98071143ba..684719ed09 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddConversionAction.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddConversionAction.java
@@ -90,7 +90,7 @@ public static void main(String[] args) {
    * @param customerId the client customer ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddConversionAction]
+  // [START add_conversion_action]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
 
     // Creates a ConversionAction.
@@ -124,5 +124,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
       }
     }
   }
-  // [END AddConversionAction]
+  // [END add_conversion_action]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddConversionBasedUserList.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddConversionBasedUserList.java
index 3246c766c1..a2655d37ac 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddConversionBasedUserList.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddConversionBasedUserList.java
@@ -100,7 +100,7 @@ public static void main(String[] args) {
    * @param conversionActionIds the IDs of the conversion actions for the basic user list.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddConversionBasedUserList]
+  // [START add_conversion_based_user_list]
   private void runExample(
       GoogleAdsClient googleAdsClient, long customerId, List<Long> conversionActionIds) {
     List<UserListActionInfo> userListActionInfoList = new ArrayList<>();
@@ -144,5 +144,5 @@ private void runExample(
           response.getResults(0).getResourceName());
     }
   }
-  // [END AddConversionBasedUserList]
+  // [END add_conversion_based_user_list]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddCustomerMatchUserList.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddCustomerMatchUserList.java
index 614c0b37dc..959b7cad06 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddCustomerMatchUserList.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddCustomerMatchUserList.java
@@ -182,7 +182,7 @@ private String createCustomerMatchUserList(GoogleAdsClient googleAdsClient, long
    * @param userListResourceName the resource name of the Customer Match user list to add members.
    *     to.
    */
-  // [START AddCustomerMatchUserList]
+  // [START add_customer_match_user_list]
   private void addUsersToCustomerMatchUserList(
       GoogleAdsClient googleAdsClient, long customerId, String userListResourceName)
       throws UnsupportedEncodingException {
@@ -244,7 +244,7 @@ private void addUsersToCustomerMatchUserList(
           googleAdsClient, customerId, offlineUserDataJobResourceName, userListResourceName);
     }
   }
-  // [END AddCustomerMatchUserList]
+  // [END add_customer_match_user_list]
 
   /**
    * Creates a list of offline user data job operations that will add users to the list.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddExpressionRuleUserList.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddExpressionRuleUserList.java
index cba839e3fe..1a35e8e797 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddExpressionRuleUserList.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddExpressionRuleUserList.java
@@ -97,7 +97,7 @@ public static void main(String[] args) {
    * @param customerId the client customer ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddExpressionRuleUserList]
+  // [START add_expression_rule_user_list]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
     String urlString = "url__";
 
@@ -179,5 +179,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
       System.out.printf("Created user list with resource name '%s'.%n", userListResourceName);
     }
   }
-  // [END AddExpressionRuleUserList]
+  // [END add_expression_rule_user_list]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddLogicalUserList.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddLogicalUserList.java
index 876992159e..bdc3e7c0aa 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddLogicalUserList.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddLogicalUserList.java
@@ -104,7 +104,7 @@ public static void main(String[] args) {
    * @param userListIds the IDs of the lists to be used for the new combination user list.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddLogicalUserList]
+  // [START add_logical_user_list]
   private void runExample(
       GoogleAdsClient googleAdsClient, long customerId, List<Long> userListIds) {
     // Adds each of the provided list IDs to a list of rule operands specifying which lists the
@@ -152,5 +152,5 @@ private void runExample(
           response.getResults(0).getResourceName());
     }
   }
-  // [END AddLogicalUserList]
+  // [END add_logical_user_list]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddMerchantCenterDynamicRemarketingCampaign.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddMerchantCenterDynamicRemarketingCampaign.java
index b2fadfebe5..955027bc1d 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddMerchantCenterDynamicRemarketingCampaign.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddMerchantCenterDynamicRemarketingCampaign.java
@@ -161,7 +161,7 @@ private void runExample(
    * @param campaignBudgetId the campaign budget ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddMerchantCenterDynamicRemarketingCampaign]
+  // [START add_merchant_center_dynamic_remarketing_campaign]
   private String createCampaign(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -208,7 +208,7 @@ private String createCampaign(
       return campaignResourceName;
     }
   }
-  // [END AddMerchantCenterDynamicRemarketingCampaign]
+  // [END add_merchant_center_dynamic_remarketing_campaign]
 
   /**
    * Creates an ad group for the remarketing campaign.
@@ -218,7 +218,7 @@ private String createCampaign(
    * @param campaignResourceName the campaign resource name.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddMerchantCenterDynamicRemarketingCampaign_1]
+  // [START add_merchant_center_dynamic_remarketing_campaign_1]
   private String createAdGroup(
       GoogleAdsClient googleAdsClient, long customerId, String campaignResourceName) {
     // Creates the ad group.
@@ -244,7 +244,7 @@ private String createAdGroup(
       return adGroupResourceName;
     }
   }
-  // [END AddMerchantCenterDynamicRemarketingCampaign_1]
+  // [END add_merchant_center_dynamic_remarketing_campaign_1]
 
   /**
    * Creates the responsive display ad.
@@ -254,7 +254,7 @@ private String createAdGroup(
    * @param adGroupResourceName the campaign resource name.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddMerchantCenterDynamicRemarketingCampaign_2]
+  // [START add_merchant_center_dynamic_remarketing_campaign_2]
   private void createAd(
       GoogleAdsClient googleAdsClient, long customerId, String adGroupResourceName)
       throws IOException {
@@ -329,7 +329,7 @@ private void createAd(
           response.getResults(0).getResourceName());
     }
   }
-  // [END AddMerchantCenterDynamicRemarketingCampaign_2]
+  // [END add_merchant_center_dynamic_remarketing_campaign_2]
 
   /**
    * Adds an image to the Google Ads account.
@@ -377,7 +377,7 @@ private String uploadAsset(
    * @param userListId ID of the user list.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddMerchantCenterDynamicRemarketingCampaign_3]
+  // [START add_merchant_center_dynamic_remarketing_campaign_3]
   private void attachUserList(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -407,5 +407,5 @@ private void attachUserList(
           response.getResults(0).getResourceName());
     }
   }
-  // [END AddMerchantCenterDynamicRemarketingCampaign_3]
+  // [END add_merchant_center_dynamic_remarketing_campaign_3]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddRealEstateFeed.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddRealEstateFeed.java
index a118fc5aa9..ec0565deca 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddRealEstateFeed.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddRealEstateFeed.java
@@ -199,7 +199,7 @@ private String createFeed(GoogleAdsClient googleAdsClient, long customerId) {
    * @param feedResourceName the resource name of the feed.
    * @return a Map containing the RealEstatePlaceholderField and FeedAttribute.
    */
-  // [START AddRealEstateFeed]
+  // [START add_real_estate_feed]
   private Map<RealEstatePlaceholderField, FeedAttribute> getFeed(
       GoogleAdsClient googleAdsClient, long customerId, String feedResourceName) {
     // Constructs the query.
@@ -251,7 +251,7 @@ private Map<RealEstatePlaceholderField, FeedAttribute> getFeed(
       return feedAttributes;
     }
   }
-  // [END AddRealEstateFeed]
+  // [END add_real_estate_feed]
 
   /**
    * Creates a feed mapping for a given feed.
@@ -341,7 +341,7 @@ private void createFeedMapping(
    * @param feedAttributes the feed attributes.
    * @param feedResourceName the feed resource name.
    */
-  // [START AddRealEstateFeed_1]
+  // [START add_real_estate_feed_1]
   private void createFeedItems(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -412,5 +412,5 @@ private void createFeedItems(
       }
     }
   }
-  // [END AddRealEstateFeed_1]
+  // [END add_real_estate_feed_1]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddRemarketingAction.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddRemarketingAction.java
index a14079cd77..d02b5d4622 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddRemarketingAction.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/AddRemarketingAction.java
@@ -89,7 +89,7 @@ public static void main(String[] args) {
    * @param customerId the client customer ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddRemarketingAction]
+  // [START add_remarketing_action]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
 
     // Creates a remarketing action with the specified name.
@@ -116,7 +116,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
 
     // Creates a query that retrieves the previously created remarketing action with its generated
     // tag snippets.
-    // [START AddRemarketingAction_1]
+    // [START add_remarketing_action_1]
     String query =
         String.format(
             "SELECT remarketing_action.id,"
@@ -125,7 +125,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
                 + "FROM remarketing_action "
                 + "WHERE remarketing_action.resource_name = '%s'",
             remarketingActionResourceName);
-    // [END AddRemarketingAction_1]
+    // [END add_remarketing_action_1]
     try (GoogleAdsServiceClient googleAdsServiceClient =
         googleAdsClient.getLatestVersion().createGoogleAdsServiceClient()) {
       // Issues a search request.
@@ -152,5 +152,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
       }
     }
   }
-  // [END AddRemarketingAction]
+  // [END add_remarketing_action]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/SetupAdvancedRemarketing.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/SetupAdvancedRemarketing.java
index 0bb425f21a..d21db0cf7d 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/SetupAdvancedRemarketing.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/SetupAdvancedRemarketing.java
@@ -103,7 +103,7 @@ public static void main(String[] args) {
    */
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
     // Creates a rule targeting any user that visited the checkout page.
-    // [START SetupAdvancedRemarketing]
+    // [START setup_advanced_remarketing]
     UserListRuleItemInfo checkoutRule =
         UserListRuleItemInfo.newBuilder()
             // The rule variable name must match a corresponding key name fired from a pixel.
@@ -118,10 +118,10 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
                     .setValue("checkout")
                     .build())
             .build();
-    // [END SetupAdvancedRemarketing]
+    // [END setup_advanced_remarketing]
 
     // Creates a rule targeting any user that had more than one item in their cart.
-    // [START SetupAdvancedRemarketing_1]
+    // [START setup_advanced_remarketing_1]
     UserListRuleItemInfo cartSizeRule =
         UserListRuleItemInfo.newBuilder()
             // The rule variable name must match a corresponding key name fired from a pixel.
@@ -132,22 +132,22 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
                     .setValue(1.0)
                     .build())
             .build();
-    // [END SetupAdvancedRemarketing_1]
+    // [END setup_advanced_remarketing_1]
 
     // Creates a rule group that includes the checkout and cart size rules. Combining the two rule
     // items into a UserListRuleItemGroupInfo object causes Google Ads to AND their rules together.
     // To instead OR the rules together, each rule should be placed in its own rule item group.
-    // [START SetupAdvancedRemarketing_2]
+    // [START setup_advanced_remarketing_2]
     UserListRuleItemGroupInfo checkoutAndCartSizeRuleGroup =
         UserListRuleItemGroupInfo.newBuilder()
             .addAllRuleItems(ImmutableList.of(checkoutRule, cartSizeRule))
             .build();
-    // [END SetupAdvancedRemarketing_2]
+    // [END setup_advanced_remarketing_2]
 
     // Creates the RuleItem for checkout start date.
     // The tags and keys used below must have been in place in the past for the date range specified
     // in the rules.
-    // [START SetupAdvancedRemarketing_3]
+    // [START setup_advanced_remarketing_3]
     UserListRuleItemInfo startDateRule =
         UserListRuleItemInfo.newBuilder()
             // The rule variable name must match a corresponding key name fired from a pixel.
@@ -160,10 +160,10 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
                     .setValue("20191031")
                     .build())
             .build();
-    // [END SetupAdvancedRemarketing_3]
+    // [END setup_advanced_remarketing_3]
 
     // Creates the RuleItem for checkout end date.
-    // [START SetupAdvancedRemarketing_4]
+    // [START setup_advanced_remarketing_4]
     UserListRuleItemInfo endDateRule =
         UserListRuleItemInfo.newBuilder()
             // The rule variable name must match a corresponding key name fired from a pixel.
@@ -174,24 +174,24 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
                     .setValue("20200101")
                     .build())
             .build();
-    // [END SetupAdvancedRemarketing_4]
+    // [END setup_advanced_remarketing_4]
 
     // Creates a rule group targeting users who checked out between November and December by using
     // the start and end date rules. Combining the two rule items into a UserListRuleItemGroupInfo
     // object causes Google Ads to AND their rules together. To instead OR the rules together, each
     // rule should be placed in its own rule item group.
-    // [START SetupAdvancedRemarketing_5]
+    // [START setup_advanced_remarketing_5]
     UserListRuleItemGroupInfo checkoutDateRuleGroup =
         UserListRuleItemGroupInfo.newBuilder()
             .addAllRuleItems(ImmutableList.of(startDateRule, endDateRule))
             .build();
-    // [END SetupAdvancedRemarketing_5]
+    // [END setup_advanced_remarketing_5]
 
     // Creates an ExpressionRuleUserListInfo object, or a boolean rule that defines this user list.
     // The default rule_type for a UserListRuleInfo object is OR of ANDs (disjunctive normal form).
     // That is, rule items will be ANDed together within rule item groups and the groups themselves
     // will be ORed together.
-    // [START SetupAdvancedRemarketing_6]
+    // [START setup_advanced_remarketing_6]
     ExpressionRuleUserListInfo expressionRuleUserListInfo =
         ExpressionRuleUserListInfo.newBuilder()
             .setRule(
@@ -199,7 +199,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
                     .addAllRuleItemGroups(
                         ImmutableList.of(checkoutAndCartSizeRuleGroup, checkoutDateRuleGroup)))
             .build();
-    // [END SetupAdvancedRemarketing_6]
+    // [END setup_advanced_remarketing_6]
 
     // Defines a representation of a user list that is generated by a rule.
     RuleBasedUserListInfo ruleBasedUserListInfo =
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/SetupRemarketing.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/SetupRemarketing.java
index 8b9d48143f..e8e3f1e771 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/SetupRemarketing.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/SetupRemarketing.java
@@ -167,7 +167,7 @@ private void runExample(
    * @param customerId the client customer ID.
    * @return the user list resource name.
    */
-  // [START SetupRemarketing]
+  // [START setup_remarketing]
   private String createUserList(GoogleAdsClient googleAdsClient, long customerId) {
     // Creates a rule targeting any user that visited a url containing 'example.com'.
     UserListRuleItemInfo rule =
@@ -226,7 +226,7 @@ private String createUserList(GoogleAdsClient googleAdsClient, long customerId)
       return userListResourceName;
     }
   }
-  // [END SetupRemarketing]
+  // [END setup_remarketing]
 
   /**
    * Creates an ad group criterion that targets a user list with an ad group.
@@ -237,7 +237,7 @@ private String createUserList(GoogleAdsClient googleAdsClient, long customerId)
    * @param userList the resource name of the user list to be targeted.
    * @return the ad group criterion resource name.
    */
-  // [START SetupRemarketing_1]
+  // [START setup_remarketing_1]
   private String targetAdsInAdGroupToUserList(
       GoogleAdsClient googleAdsClient, long customerId, long adGroupId, String userList) {
     // Creates the ad group criterion targeting members of the user list.
@@ -267,7 +267,7 @@ private String targetAdsInAdGroupToUserList(
       return adGroupCriterionResourceName;
     }
   }
-  // [END SetupRemarketing_1]
+  // [END setup_remarketing_1]
 
   /**
    * Updates the bid modifier value on an ad group criterion.
@@ -319,7 +319,7 @@ private void modifyAdGroupBids(
    * @param customerId the client customer ID.
    * @param campaignId the campaign under which to remove the ad group criteria.
    */
-  // [START SetupRemarketing_3]
+  // [START setup_remarketing_3]
   private void removeExistingListCriteriaFromAdGroup(
       GoogleAdsClient googleAdsClient, long customerId, long campaignId) {
     // Retrieves all of the ad group criteria under a campaign.
@@ -349,7 +349,7 @@ private void removeExistingListCriteriaFromAdGroup(
       }
     }
   }
-  // [END SetupRemarketing_3]
+  // [END setup_remarketing_3]
 
   /**
    * Finds all of user list ad group criteria under a campaign.
@@ -359,7 +359,7 @@ private void removeExistingListCriteriaFromAdGroup(
    * @param campaignId the campaign under which to search the ad group criteria.
    * @return a list of the ad group criteria resource names.
    */
-  // [START SetupRemarketing_2]
+  // [START setup_remarketing_2]
   private List<String> getUserListAdGroupCriterion(
       GoogleAdsClient googleAdsClient, long customerId, long campaignId) {
     List<String> userListCriteria = new ArrayList<>();
@@ -392,7 +392,7 @@ private List<String> getUserListAdGroupCriterion(
     }
     return userListCriteria;
   }
-  // [END SetupRemarketing_2]
+  // [END setup_remarketing_2]
 
   /**
    * Creates a campaign criterion that targets a user list with a campaign.
@@ -403,7 +403,7 @@ private List<String> getUserListAdGroupCriterion(
    * @param userList the resource name of the user list to be targeted.
    * @return the campaign criterion resource name.
    */
-  // [START SetupRemarketing_4]
+  // [START setup_remarketing_4]
   private String targetAdsInCampaignToUserList(
       GoogleAdsClient googleAdsClient, long customerId, long campaignId, String userList) {
     // Creates the campaign criterion.
@@ -433,7 +433,7 @@ private String targetAdsInCampaignToUserList(
       return campaignCriterionResourceName;
     }
   }
-  // [END SetupRemarketing_4]
+  // [END setup_remarketing_4]
 
   /**
    * Updates the bid modifier value on a campaign criterion.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UpdateAudienceTargetRestriction.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UpdateAudienceTargetRestriction.java
index 5c9539ebd2..02f8bd2d5d 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UpdateAudienceTargetRestriction.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UpdateAudienceTargetRestriction.java
@@ -109,13 +109,13 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long a
     try (GoogleAdsServiceClient googleAdsServiceClient =
         googleAdsClient.getLatestVersion().createGoogleAdsServiceClient()) {
       // Creates a search request that retrieves the targeting settings from a given ad group.
-      // [START UpdateAudienceTargetRestriction]
+      // [START update_audience_target_restriction]
       String searchQuery =
           "SELECT ad_group.id, ad_group.name, ad_group.targeting_setting.target_restrictions "
               + "FROM ad_group "
               + "WHERE ad_group.id = "
               + adGroupId;
-      // [END UpdateAudienceTargetRestriction]
+      // [END update_audience_target_restriction]
 
       // Creates a request that will retrieve all ad groups using pages of the specified page size.
       SearchGoogleAdsRequest request =
@@ -144,7 +144,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long a
         // Reconstructs the TargetingSetting object with the updated audience target restriction
         // because Google will overwrite the entire targeting_setting field of the ad group when
         // the field mask includes targeting_setting in an update operation.
-        // [START UpdateAudienceTargetRestriction_1]
+        // [START update_audience_target_restriction_1]
         for (TargetRestriction targetRestriction : targetRestrictions) {
           TargetingDimension targetingDimension = targetRestriction.getTargetingDimension();
           boolean bidOnly = targetRestriction.getBidOnly();
@@ -167,7 +167,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long a
                     .setBidOnly(true));
           }
         }
-        // [END UpdateAudienceTargetRestriction_1]
+        // [END update_audience_target_restriction_1]
       }
       // Only updates the TargetingSetting on the ad group if there is an AUDIENCE TargetRestriction
       // with bid_only set to false.
@@ -188,7 +188,7 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId, long a
    * @param adGroupId the ID of the ad group to update.
    * @param targetingSetting the updated targeting setting.
    */
-  // [START UpdateAudienceTargetRestriction_2]
+  // [START update_audience_target_restriction_2]
   private void updateTargetingSetting(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -222,5 +222,5 @@ private void updateTargetingSetting(
           response.getResults(0).getResourceName());
     }
   }
-  // [END UpdateAudienceTargetRestriction_2]
+  // [END update_audience_target_restriction_2]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadCallConversion.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadCallConversion.java
index 4f081de2ce..21e37ecbe5 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadCallConversion.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadCallConversion.java
@@ -121,7 +121,7 @@ public static void main(String[] args) {
    * @param callStartDateTime the call start date time
    * @param conversionValue the value of the conversion in USD.
    */
-  // [START UploadCallConversion]
+  // [START upload_call_conversion]
   private void runExample(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -166,5 +166,5 @@ private void runExample(
           result.getCallStartDateTime(), result.getCallerId(), result.getConversionAction());
     }
   }
-  // [END UploadCallConversion]
+  // [END upload_call_conversion]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadConversionAdjustment.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadConversionAdjustment.java
index 6224259d7c..40ead46dcb 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadConversionAdjustment.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadConversionAdjustment.java
@@ -150,7 +150,7 @@ public static void main(String[] args) {
    * @param adjustmentDateTime date and time of the adjustment.
    * @param restatementValue the adjusted value for adjustment type RESTATEMENT.
    */
-  // [START UploadConversionAdjustment]
+  // [START upload_conversion_adjustment]
   private void runExample(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -214,5 +214,5 @@ private void runExample(
       }
     }
   }
-  // [END UploadConversionAdjustment]
+  // [END upload_conversion_adjustment]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadOfflineConversion.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadOfflineConversion.java
index 549b0ba8d6..f2e951ea29 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadOfflineConversion.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/remarketing/UploadOfflineConversion.java
@@ -115,7 +115,7 @@ public static void main(String[] args) {
    * @param conversionDateTime date and time of the conversion.
    * @param conversionValue the value of the conversion.
    */
-  // [START UploadOfflineConversion]
+  // [START upload_offline_conversion]
   private void runExample(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -166,5 +166,5 @@ private void runExample(
       }
     }
   }
-  // [END UploadOfflineConversion]
+  // [END upload_offline_conversion]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/reporting/GetKeywordStats.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/reporting/GetKeywordStats.java
index c62b8a82bc..5a3d3257a3 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/reporting/GetKeywordStats.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/reporting/GetKeywordStats.java
@@ -90,7 +90,7 @@ public static void main(String[] args) throws IOException {
    * @param customerId the client customer ID.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START GetKeywordStats]
+  // [START get_keyword_stats]
   private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
     try (GoogleAdsServiceClient googleAdsServiceClient =
         googleAdsClient.getLatestVersion().createGoogleAdsServiceClient()) {
@@ -160,5 +160,5 @@ private void runExample(GoogleAdsClient googleAdsClient, long customerId) {
       }
     }
   }
-  // [END GetKeywordStats]
+  // [END get_keyword_stats]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingProductAd.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingProductAd.java
index f971dbf64c..87e3244115 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingProductAd.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingProductAd.java
@@ -207,7 +207,7 @@ private String addCampaignBudget(GoogleAdsClient googleAdsClient, long customerI
    * @return resource name of the newly created campaign.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddShoppingProductAd_2]
+  // [START add_shopping_product_ad_2]
   private String addStandardShoppingCampaign(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -264,7 +264,7 @@ private String addStandardShoppingCampaign(
       return result.getResourceName();
     }
   }
-  // [END AddShoppingProductAd_2]
+  // [END add_shopping_product_ad_2]
 
   /**
    * Creates a new shopping product ad group in the specified campaign.
@@ -276,7 +276,7 @@ private String addStandardShoppingCampaign(
    * @return resource name of the newly created ad group.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddShoppingProductAd_1]
+  // [START add_shopping_product_ad_1]
   private String addShoppingProductAdGroup(
       GoogleAdsClient googleAdsClient, long customerId, String campaignResourceName) {
     // Creates an ad group.
@@ -307,7 +307,7 @@ private String addShoppingProductAdGroup(
       return mutateAdGroupResult.getResourceName();
     }
   }
-  // [END AddShoppingProductAd_1]
+  // [END add_shopping_product_ad_1]
 
   /**
    * Creates a new shopping product ad group ad in the specified ad group.
@@ -319,7 +319,7 @@ private String addShoppingProductAdGroup(
    * @return resource name of the newly created ad group ad.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddShoppingProductAd]
+  // [START add_shopping_product_ad]
   private String addShoppingProductAdGroupAd(
       GoogleAdsClient googleAdsClient, long customerId, String adGroupResourceName) {
     // Creates a new shopping product ad.
@@ -351,7 +351,7 @@ private String addShoppingProductAdGroupAd(
       return mutateAdGroupAdResult.getResourceName();
     }
   }
-  // [END AddShoppingProductAd]
+  // [END add_shopping_product_ad]
 
   /**
    * Creates a new default shopping listing group for the specified ad group. A listing group is the
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingProductListingGroupTree.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingProductListingGroupTree.java
index 283fcb7567..93a31e7390 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingProductListingGroupTree.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingProductListingGroupTree.java
@@ -128,7 +128,7 @@ public static void main(String[] args) {
    *     group tree already exists and this option is not set to true.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddShoppingProductListingGroupTree]
+  // [START add_shopping_product_listing_group_tree]
   private void runExample(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -270,7 +270,7 @@ private void runExample(
       }
     }
   }
-  // [END AddShoppingProductListingGroupTree]
+  // [END add_shopping_product_listing_group_tree]
 
   /**
    * Removes all the ad group criteria that define the existing listing group tree for an ad group.
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingSmartAd.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingSmartAd.java
index af9cab5408..9791618f05 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingSmartAd.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/shoppingads/AddShoppingSmartAd.java
@@ -213,7 +213,7 @@ private String addCampaignBudget(GoogleAdsClient googleAdsClient, long customerI
    * @return resource name of the newly created campaign.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddShoppingSmartAd_3]
+  // [START add_shopping_smart_ad_3]
   private String addSmartShoppingCampaign(
       GoogleAdsClient googleAdsClient,
       long customerId,
@@ -230,7 +230,7 @@ private String addSmartShoppingCampaign(
             .setMerchantId(merchantCenterAccountId)
             .build();
 
-    // [START AddShoppingSmartAd]
+    // [START add_shopping_smart_ad]
     // Creates the campaign.
     Campaign campaign =
         Campaign.newBuilder()
@@ -259,7 +259,7 @@ private String addSmartShoppingCampaign(
             // Sets the budget.
             .setCampaignBudget(budgetResourceName)
             .build();
-    // [END AddShoppingSmartAd]
+    // [END add_shopping_smart_ad]
 
     // Creates a campaign operation.
     CampaignOperation operation = CampaignOperation.newBuilder().setCreate(campaign).build();
@@ -276,7 +276,7 @@ private String addSmartShoppingCampaign(
       return result.getResourceName();
     }
   }
-  // [END AddShoppingSmartAd_3]
+  // [END add_shopping_smart_ad_3]
 
   /**
    * Creates a new ad group in the specified Smart Shopping campaign.
@@ -288,7 +288,7 @@ private String addSmartShoppingCampaign(
    * @return resource name of the newly created ad group.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddShoppingSmartAd_2]
+  // [START add_shopping_smart_ad_2]
   private String addSmartShoppingAdGroup(
       GoogleAdsClient googleAdsClient, long customerId, String campaignResourceName) {
     // Creates an ad group.
@@ -317,7 +317,7 @@ private String addSmartShoppingAdGroup(
       return mutateAdGroupResult.getResourceName();
     }
   }
-  // [END AddShoppingSmartAd_2]
+  // [END add_shopping_smart_ad_2]
 
   /**
    * Creates a new ad group ad in the specified Smart Shopping ad group.
@@ -329,7 +329,7 @@ private String addSmartShoppingAdGroup(
    * @return resource name of the newly created ad group ad.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START AddShoppingSmartAd_1]
+  // [START add_shopping_smart_ad_1]
   private String addSmartShoppingAdGroupAd(
       GoogleAdsClient googleAdsClient, long customerId, String adGroupResourceName) {
     // Creates a new Smart Shopping ad.
@@ -359,7 +359,7 @@ private String addSmartShoppingAdGroupAd(
       return mutateAdGroupAdResult.getResourceName();
     }
   }
-  // [END AddShoppingSmartAd_1]
+  // [END add_shopping_smart_ad_1]
 
   /**
    * Creates a new Shopping listing group for the specified ad group. This is known as a "product
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/targeting/AddCampaignTargetingCriteria.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/targeting/AddCampaignTargetingCriteria.java
index bb3bcaf339..fdaf92e0b2 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/targeting/AddCampaignTargetingCriteria.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/targeting/AddCampaignTargetingCriteria.java
@@ -183,7 +183,7 @@ private static CampaignCriterion buildNegativeKeywordCriterion(
    * @param campaignResourceName the campaign resource name to target.
    * @return a campaign criterion object with the specified locationId and resource name.
    */
-  // [START AddCampaignTargetingCriteria]
+  // [START add_campaign_targeting_criteria]
   private static CampaignCriterion buildLocationIdCriterion(
       long locationId, String campaignResourceName) {
     Builder criterionBuilder = CampaignCriterion.newBuilder().setCampaign(campaignResourceName);
@@ -194,7 +194,7 @@ private static CampaignCriterion buildLocationIdCriterion(
 
     return criterionBuilder.build();
   }
-  // [END AddCampaignTargetingCriteria]
+  // [END add_campaign_targeting_criteria]
 
   /**
    * Creates a campaign criterion from an address and proximity radius.
@@ -202,7 +202,7 @@ private static CampaignCriterion buildLocationIdCriterion(
    * @param campaignResourceName the campaign resource name to target.
    * @return a campaign criterion object with the specified address and targeting radius.
    */
-  // [START AddCampaignTargetingCriteria_1]
+  // [START add_campaign_targeting_criteria_1]
   private static CampaignCriterion buildProximityLocation(String campaignResourceName) {
     Builder builder = CampaignCriterion.newBuilder().setCampaign(campaignResourceName);
 
@@ -218,5 +218,5 @@ private static CampaignCriterion buildProximityLocation(String campaignResourceN
 
     return builder.build();
   }
-  // [END AddCampaignTargetingCriteria_1]
+  // [END add_campaign_targeting_criteria_1]
 }
diff --git a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/targeting/GetGeoTargetConstantsByNames.java b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/targeting/GetGeoTargetConstantsByNames.java
index 7a5e7da5f8..2154060224 100644
--- a/google-ads-examples/src/main/java/com/google/ads/googleads/examples/targeting/GetGeoTargetConstantsByNames.java
+++ b/google-ads-examples/src/main/java/com/google/ads/googleads/examples/targeting/GetGeoTargetConstantsByNames.java
@@ -65,7 +65,7 @@ public static void main(String[] args) {
    * @param googleAdsClient the Google Ads API client.
    * @throws GoogleAdsException if an API request failed with one or more service errors.
    */
-  // [START GetGeoTargetConstantsByNames]
+  // [START get_geo_target_constants_by_names]
   private void runExample(GoogleAdsClient googleAdsClient) {
     try (GeoTargetConstantServiceClient geoTargetClient =
         googleAdsClient.getLatestVersion().createGeoTargetConstantServiceClient()) {
@@ -102,5 +102,5 @@ private void runExample(GoogleAdsClient googleAdsClient) {
       }
     }
   }
-  // [END GetGeoTargetConstantsByNames]
+  // [END get_geo_target_constants_by_names]
 }