add the link to the form

mutianf · mutianf · commit a2e4c9ba57cf · 2022-08-03T15:26:09.000-04:00
diff --git a/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/BigtableDataSettings.java b/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/BigtableDataSettings.java
@@ -478,7 +478,11 @@ public Long getTargetRpcLatencyMsForBatchMutation() {
       return stubSettings.bulkMutateRowsSettings().getTargetRpcLatencyMs();
     }
 
-    /** Register built in metrics. * */
+    /**
+     * Register built in metrics. This is an experimental feature. Please fill up this form
+     * to have your project allow listed for the private preview:
+     * https://forms.gle/xuhu6vCunn2MjV2m9
+     */
     @BetaApi("Built in metric is not currently stable and may change in the future")
     public Builder registerBuiltinMetrics() throws IOException {
       if (BUILTIN_METRICS_REGISTERED.compareAndSet(false, true)) {
