waitForConnection
A helper for waiting until someone connects to a transport.
The list of transports must contain transports that all all in the state MdocTransport.State.ADVERTISING.
The first connection which a remote peer connects to is returned and the other ones are closed.
Return
the MdocTransport a remote peer connected to, will be in MdocTransport.State.CONNECTING or MdocTransport.State.CONNECTED state.
Parameters
eSenderKey
This should be set to EDeviceKey if using forward engagement or EReaderKey if using reverse engagement.