Use getDestination from SAP Cloud SDK to avoid direct visibility of credentials

[gregorwolf]

Hello @anbazhagan-uma, @ajinkyapatil8190 and @pra1veenk,

thank you for the effort that went into this sample application. I would suggest this improvement:

As I can see server/services/S4HANAClient.js you've already using the great SAP Cloud SDK with it's executeHttpRequest to call the S/4HANA backend. But you're storing the credentials for the Microsoft Graph in Environment variables. I would suggest to store them in a destination and get them using getDestination from the SAP Cloud SDK?

Best Regards
Gregor