docs: static public CombinedRegistry getCombinedRegistry(CamelContext camelContext){
  		Registry reg = camelContext.getRegistry();
  		CombinedRegistry registry = null;
  		if (reg instanceof PropertyPlaceholderDelegateRegistry){
  			registry = (CombinedRegistry) ((PropertyPlaceholderDelegateRegistry)reg).getRegistry();
  		}else{ // should not go here
  			registry = (CombinedRegistry) reg;
  		}
  		return registry;
  	}