PR feedback(generated): use enum values instead of plain strings

Generated SDK source code using:
- Generator version 3.107.1
- Specification version 1.0.0-dev0.1.29
- Automation (cloudant-sdks) version 52aab7c

Author: cloudant-sdks-automation

examples/README.md

@@ -152,14 +152,16 @@ _POST `/_api/v2/user/activity_tracker/events`_
 ```java
 // section: code imports
 import com.ibm.cloud.cloudant.v1.Cloudant;
+import com.ibm.cloud.cloudant.v1.model.ActivityTrackerEvents;
 import com.ibm.cloud.cloudant.v1.model.Ok;
 import com.ibm.cloud.cloudant.v1.model.PostActivityTrackerEventsOptions;
 // section: code
 Cloudant service = Cloudant.newInstance();
 
 PostActivityTrackerEventsOptions options =
     new PostActivityTrackerEventsOptions.Builder()
-        .addTypes("management")
+        .addTypes(ActivityTrackerEvents.Types.MANAGEMENT)
+        .addTypes(ActivityTrackerEvents.Types.DATA)
         .build();
 
 Ok response =

examples/snippets/postActivityTrackerEvents/example_request.java

@@ -1,13 +1,15 @@
 // section: code imports
 import com.ibm.cloud.cloudant.v1.Cloudant;
+import com.ibm.cloud.cloudant.v1.model.ActivityTrackerEvents;
 import com.ibm.cloud.cloudant.v1.model.Ok;
 import com.ibm.cloud.cloudant.v1.model.PostActivityTrackerEventsOptions;
 // section: code
 Cloudant service = Cloudant.newInstance();
 
 PostActivityTrackerEventsOptions options =
     new PostActivityTrackerEventsOptions.Builder()
-        .addTypes("management")
+        .addTypes(ActivityTrackerEvents.Types.MANAGEMENT)
+        .addTypes(ActivityTrackerEvents.Types.DATA)
         .build();
 
 Ok response =