Pyramid of Doom when accessing first call of an account with identifier

AccountPhoneCallPyramidOfDoom.swift

func hangUpFirstCallOnAccountWithIdentifier(identifier: Int) {
    if let account = accountRegistry.accountWithIdentifier(identifier) {
        if let call = account.firstCall {
            call.hangUp()
        } else {
            print("Could not find first call for an account")
        }
    } else {
        print("Could not find account")
    }
}