code: private final List getFilter(String type) {
  	    	try {
  	    		mutex.acquire();
  	        return (List) mapFilter.get(type + ".filter");
  	    	}
  	    	finally {
  	    		try{mutex.release();}catch(Throwable ignore){}
  	    	}
      }
docs: return the filters of type 'type'
  
  @param type type of filters to get
  
  @return the filters of type 'type'