public static com.google.apps.events.subscriptions.v1.DeleteSubscriptionRequest parseFrom(
      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
        PARSER, input, extensionRegistry);
  }
<pre>
Optional. Etag of the subscription.

If present, it must match with the server's etag. Otherwise, request
fails with the status `ABORTED`.
</pre>

<code>string etag = 4 [(.google.api.field_behavior) = OPTIONAL];</code>

@return The bytes for etag.
java-workspaceevents/proto-google-cloud-workspaceevents-v1/src/main/java/com/google/apps/events/subscriptions/v1/DeleteSubscriptionRequest.java