generateDestination

Low level API to generate a new address to receive funds, called by newDestination. Use "newDestination()" in almost all cases. This API does not pre-generate (so may be slow), and does not install the destination into bloom filters, etc, before returning. This means that there may be a race condition between the use of the destination returned here and the wallet's monitoring of that destination which could cause funds to be received but not noticed by this wallet.