code: public void start() throws ServerLifecycleException {
  		try {
  			contextHandlerCollection.addHandler(contextHandler);
  			contextHandlerCollection.mapContexts();
  			contextHandler.start();
  			LOG.info("WebDavServlet started: " + contextPath);
  		} catch (Exception e) {
  			throw new ServerLifecycleException("Servlet couldn't be started", e);
  		}
  	}
docs: Convenience function to start this servlet.
  
  @throws ServerLifecycleException If the servlet could not be started for any unexpected reason.