while (names.hasMoreElements()) {
                    final String name = names.nextElement();
                    if (name.startsWith(prefix)) {
                        final String[] values = request.getParameterValues(name);
                        if (values != null) {
                            for (final String value : values) {
                                buf.append('&');

            return null;
        }

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

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

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

        @Override

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

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

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

                    .get(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).anyMatch(name -> {
                        final String[] values = req.getParameterValues(name);
                        if (values == null || values.length == 0 || StringUtil.isEmpty(values[0])) {
                            if (logger.isDebugEnabled()) {

            @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;
            }

            @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);
        }

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

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

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