* @see org.apache.lenya.workflow.impl.WorkflowInstanceImpl#getWorkflow(java.lang.String)
*/
protected WorkflowImpl getWorkflow(String workflowName)
throws WorkflowException {
assert workflowName != null && !"".equals(workflowName);
WorkflowImpl workflow = (WorkflowImpl) WorkflowFactory.buildWorkflow(document.getPublication(),
workflowName);
return workflow;
}