fix: better support for fallback mode (#580)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 468790263

Source-Link: googleapis/googleapis@873ab45

Source-Link: https://github.com/googleapis/googleapis-gen/commit/cb6f37aeff2a3472e40a7bbace8c67d75e24bee5
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiY2I2ZjM3YWVmZjJhMzQ3MmU0MGE3YmJhY2U4YzY3ZDc1ZTI0YmVlNSJ9

Author: gcf-owl-bot[bot]

samples/generated/v1/device_manager.bind_device_to_gateway.js

@@ -23,6 +23,9 @@
 function main(parent, gatewayId, deviceId) {
   // [START cloudiot_v1_generated_DeviceManager_BindDeviceToGateway_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**

samples/generated/v1/device_manager.create_device.js

@@ -23,6 +23,9 @@
 function main(parent, device) {
   // [START cloudiot_v1_generated_DeviceManager_CreateDevice_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**

samples/generated/v1/device_manager.create_device_registry.js

@@ -23,6 +23,9 @@
 function main(parent, deviceRegistry) {
   // [START cloudiot_v1_generated_DeviceManager_CreateDeviceRegistry_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**

samples/generated/v1/device_manager.delete_device.js

@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudiot_v1_generated_DeviceManager_DeleteDevice_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**

samples/generated/v1/device_manager.delete_device_registry.js

@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudiot_v1_generated_DeviceManager_DeleteDeviceRegistry_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**

samples/generated/v1/device_manager.get_device.js

@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudiot_v1_generated_DeviceManager_GetDevice_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**

samples/generated/v1/device_manager.get_device_registry.js

@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudiot_v1_generated_DeviceManager_GetDeviceRegistry_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**

samples/generated/v1/device_manager.get_iam_policy.js

@@ -23,6 +23,9 @@
 function main(resource) {
   // [START cloudiot_v1_generated_DeviceManager_GetIamPolicy_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**

samples/generated/v1/device_manager.list_device_config_versions.js

@@ -23,6 +23,9 @@
 function main(name) {
   // [START cloudiot_v1_generated_DeviceManager_ListDeviceConfigVersions_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**

samples/generated/v1/device_manager.list_device_registries.js

@@ -23,6 +23,9 @@
 function main(parent) {
   // [START cloudiot_v1_generated_DeviceManager_ListDeviceRegistries_async]
   /**
+   * This snippet has been automatically generated and should be regarded as a code template only.
+   * It will require modifications to work.
+   * It may require correct/in-range values for request initialization.
    * TODO(developer): Uncomment these variables before running the sample.
    */
   /**