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Add outer try block for obtainKey errors. Add docs. (#27953)

* Add outer try block for obtainKey errors. Add docs.

* change to // from ///, and do specific error handling

* Add return statement after error

* Add test
K
Kaushik Iska committed
9931a275b9ae0c1efd7d8e33faf01ee1ec792b46
Parent: 2acf6fd
Committed by GitHub <noreply@github.com> on 2/20/2019, 11:31:07 PM