CodeGen from PR 18641 in Azure/azure-rest-api-specs

config azurestackhci readme.java (Azure#18641)

* set `x-ms-client-flatten` to `false` in `arcSettings.json`, `clusters.json` and `extensions.json`

* fix extensions

sdk/azurestackhci/azure-resourcemanager-azurestackhci/CHANGELOG.md

@@ -1,7 +1,8 @@
 # Release History
 
-## 1.0.0-beta.2 (Unreleased)
+## 1.0.0-beta.1 (2022-04-12)
 
+- Azure Resource Manager AzureStackHci client library for Java. This package contains Microsoft Azure SDK for AzureStackHci Management SDK. Azure Stack HCI management service. Package tag package-2022-03. For documentation on how to use this package, please see [Azure Management Libraries for Java](https://aka.ms/azsdk/java/mgmt).
 
 ## 1.0.0-beta.1 (2021-04-12)
 

sdk/azurestackhci/azure-resourcemanager-azurestackhci/README.md

@@ -2,7 +2,7 @@
 
 Azure Resource Manager AzureStackHci client library for Java.
 
-This package contains Microsoft Azure SDK for AzureStackHci Management SDK. Azure Stack HCI management service. Package tag package-2020-10. For documentation on how to use this package, please see [Azure Management Libraries for Java](https://aka.ms/azsdk/java/mgmt).
+This package contains Microsoft Azure SDK for AzureStackHci Management SDK. Azure Stack HCI management service. Package tag package-2022-03. For documentation on how to use this package, please see [Azure Management Libraries for Java](https://aka.ms/azsdk/java/mgmt).
 
 ## We'd love to hear your feedback
 
@@ -32,7 +32,7 @@ Various documentation is available to help you get started
 <dependency>
     <groupId>com.azure.resourcemanager</groupId>
     <artifactId>azure-resourcemanager-azurestackhci</artifactId>
-    <version>1.0.0-beta.1</version>
+    <version>1.0.0-beta.2</version>
 </dependency>
 ```
 [//]: # ({x-version-update-end})
@@ -74,6 +74,9 @@ See [API design][design] for general introduction on design and key concepts on
 
 ## Examples
 
+[Code snippets and samples](https://github.com/Azure/azure-sdk-for-java/blob/main/sdk/azurestackhci/azure-resourcemanager-azurestackhci/SAMPLE.md)
+
+
 ## Troubleshooting
 
 ## Next steps