ahmedabu98 commented on code in PR #34497:
URL: https://github.com/apache/beam/pull/34497#discussion_r2025192711


##########
sdks/java/io/google-ads/src/main/java/org/apache/beam/sdk/io/googleads/GoogleAdsIO.java:
##########
@@ -17,17 +17,84 @@
  */
 package org.apache.beam.sdk.io.googleads;
 
+import com.google.protobuf.Message;
+import java.io.Serializable;
+import org.apache.beam.sdk.transforms.PTransform;
+import org.apache.beam.sdk.values.PCollection;
+import org.checkerframework.checker.nullness.qual.Nullable;
+
 /**
  * {@link GoogleAdsIO} provides an API for reading from the <a
  * href="https://developers.google.com/google-ads/api/docs/start";>Google Ads 
API</a> over supported
  * versions of the Google Ads client libraries.
  *
- * @see GoogleAdsV17
+ * @see GoogleAdsV19
  */
-public class GoogleAdsIO {
-  private GoogleAdsIO() {}
+public abstract class GoogleAdsIO<GoogleAdsRowT, 
SearchGoogleAdsStreamRequestT> {
+
+  @SuppressWarnings(
+      "TypeParameterUnusedInFormals") // for source code backward compatible 
when underlying API
+  // version changed
+  public abstract <T extends PTransform<PCollection<String>, 
PCollection<GoogleAdsRowT>>> T read();
+
+  @SuppressWarnings(
+      "TypeParameterUnusedInFormals") // for source code backward compatible 
when underlying API
+  // version changed
+  public abstract <
+          T extends
+              PTransform<PCollection<SearchGoogleAdsStreamRequestT>, 
PCollection<GoogleAdsRowT>>>
+      T readAll();
+
+  public static GoogleAdsV19 current() {

Review Comment:
   ```suggestion
     public static GoogleAdsIO current() {
   ```
   
   Maybe this should stay generic?



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