* The external element (to be traced from/to) must be persisted. For simplicity, we use
* a ReqIF model.
*/
private EObject buildTestExternal() throws IOException {
ReqIF reqif = ReqIF10Factory.eINSTANCE.createReqIF();
ReqIFHeader header= ReqIF10Factory.eINSTANCE.createReqIFHeader();
header.setTitle("HeaderTitle");
reqif.setTheHeader(header);
external = header;
File file = File.createTempFile("tracing-test-", ".reqif");
file.deleteOnExit();