code: private void error(PageException pe) {
  	if (error == null) throw new PageRuntimeException(pe);
  	try {
  	    pc = ThreadLocalPageContext.get(pc);
  	    error.call(pc, new Object[] { pe.getCatchBlock(pc.getConfig()) }, false);
  	}
  	catch (PageException e) {}
      }
docs: call back error function if a error occour
  
  @param pe