Where does "myEPR" come from in Programmers Guide

[kw_richards]

Hi,

On page 47 of the Programmers Guide, it has the following

ServiceInvoker flightService = new ServiceInvoker(...);
Message request = // create new Message of desired type
request.getBody().add("org.example.flight.seatnumber", 1);
request.getBody().add("org.example.flight.flightnumber", "BA1234");
request.getHeader().getCall().setMessageID(1234);
request.getHeader().getCall().setReplyTo(myEPR);
Message response = null;
do
{
 response = flightService.deliverSync(request, 1000);
 if (response.getHeader().getCall().getRelatesTo() == 1234)
 {
 // it's out response!
 break;
 }
 else
 response = null; // and keep looping
} while maximumRetriesNotExceeded;

Where does "myEPR" come from.
The reason I'd like to know is that I'd like to set the faultTo so that exceptions can be returned to the client.
e.g.

request.getHeader().getCall().setFaultTo(myEPR);

Thanks
PS. When using mep="OneWay", faults do NOT go to the replyTo address but specifically looks for the faultTo