@Test
public void testStartSelectByTag() throws Exception {

  operation.setConfiguration(StartTranscriptionOperationHandler.SOURCE_TAG, "transcript");
  WorkflowOperationResult result = operationHandler.start(workflowInstance, null);
  Assert.assertEquals(Action.CONTINUE, result.getAction());
  Assert.assertEquals("audioTrack1", capturedTrack.getValue().getIdentifier());
}