@Override
    public ZuulFilter<?, ?> getFilterByNameAndType(String name, FilterType type) {
        if (name == null || type == null) {
            return null;
        }

        String nameAndType = type + ":" + name;
        return filtersByNameAndType.get(nameAndType);
    }
Returns a list of filters by the filterType specified
zuul-core/src/main/java/com/netflix/zuul/DynamicFilterLoader.java