Update GetUsageSummaryAvailableFields example to print field lists by category

Author: charlie-zhang109

examples/v2/usage-metering/GetUsageSummaryAvailableFields.py

@@ -1,5 +1,5 @@
 """
-Get available fields for usage summary returns "OK." response
+Get available fields for usage summary returns "OK" response
 """
 
 from datadog_api_client import ApiClient, Configuration
@@ -10,4 +10,15 @@
     api_instance = UsageMeteringApi(api_client)
     response = api_instance.get_usage_summary_available_fields()
 
-    print(response)
+    attrs = response.data.attributes
+    print(f"response_fields ({len(attrs.response_fields)}):")
+    for f in attrs.response_fields:
+        print(f"  {f}")
+
+    print(f"date_fields ({len(attrs.date_fields)}):")
+    for f in attrs.date_fields:
+        print(f"  {f}")
+
+    print(f"date_org_fields ({len(attrs.date_org_fields)}):")
+    for f in attrs.date_org_fields:
+        print(f"  {f}")