[FEATURE REQ] Can the Azure Java API support creating/managing virtual network peers between different subscriptions under different Azure Active Directory tenants?

**Query/Question**
Can the Azure Java API support creating/managing virtual network peers between different subscriptions under different Azure Active Directory tenants?

***Why is this not a Bug or a feature Request?***
The examples and documentation mention that peering is supported for networks under the same subscription, so trying to see if between different subscriptions under different Azure AD tenants is supported or not. I see that with some coding that this is possible through the Azure REST API, but would like to use the Java API for this instead if possible.

**Setup (please complete the following information if applicable):**
- OS: OS X Mojave
- IDE : IntelliJ IDEA
- Version 1.19.0

**Information Checklist**
Kindly make sure that you have added all the following information above and checkoff the required fields otherwise we will treat the issuer as an incomplete report
- [ X ] Query Added
- [ X ] Setup information Added

まず、仮想ネットワーク ピアリングに関する Azure Java API v1.19.0 の例とドキュメントを確認し、次に、それらに記載されているサブスクリプション スコープを Azure REST API の動作と比較します。サブスクリプション間およびテナント間のサポートが確認されるか、Java API に不足している機能が明確に定義された時点で、issue は完了です。

索引モデルが issue の本文から書いたものです。