@Override
            public java.util.Enumeration<String> getParameterNames() {
                return null;
            }

            @Override
            public String[] getParameterValues(String name) {
                return null;
            }

            @Override
            public java.util.Map<String, String[]> getParameterMap() {
                return null;
            }

        }

        public void setParameter(String name, String value) {
            singleParameters.put(name, value);
        }

        @Override
        public String[] getParameterValues(String name) {
            return parameters.get(name);
        }

        @Override
        public String getParameter(String name) {
            return singleParameters.get(name);
        }

        if (StringUtil.isNotBlank(key)) {
            tags = ArrayUtils.addAll(tags, key);
        }
        final String[] fields = request.getParameterValues("field");

        final PopularWordHelper popularWordHelper = ComponentUtil.getPopularWordHelper();

        final StringBuilder buf = new StringBuilder(255);
        try {