Define who's the recipient of a shielding transaction

[pacu]

Function Shield funds calls initSpend

public func shieldFunds(
        transparentAccountPrivateKey: TransparentAccountPrivKey,
        memo: String?,
        from accountIndex: Int,
        resultBlock: @escaping (Result<PendingTransactionEntity, Error>) -> Void
    ) 

Which requires a recipient Address
let shieldingSpend = try transactionManager.initSpend(zatoshi: tBalance.verified, toAddress: zAddr, memo: memo, from: 0)

There's no such string encoded recipient address for shielding transactions, since Internal Addresses are not string encoded since they are not intended to be displayed to users.

[nuttycom]

The recipient of the shielding operation is the account index that's being provided here. The wallet front-end might want to do something where it allows users to provide friendly names for accounts, so that it's not just wallet internal account 1 or whatever.

[pacu]

closed in #567