String query = (String) request.getAttribute(key);
            if (query == null) {
                final StringBuilder buf = new StringBuilder(100);
                final Enumeration<String> names = request.getParameterNames();
                while (names.hasMoreElements()) {
                    final String name = names.nextElement();
                    if (name.startsWith(prefix)) {

            return null;
        }

        @Override
        public String getParameter(String name) {
            return null;
        }

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

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

        @Override

        }

        @Override
        public String getParameter(String name) {
            return null;
        }

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

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

            @Override
            public String getParameter(String name) {
                return null;
            }

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

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

            @Override
            public String getParameter(String name) {
                return null;
            }

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

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

        public jakarta.servlet.ServletInputStream getInputStream() {
            throw new UnsupportedOperationException();
        }

        @Override
        public java.util.Enumeration<String> getParameterNames() {
            throw new UnsupportedOperationException();
        }

        @Override
        public Map<String, String[]> getParameterMap() {

        }

        @Override
        public String getParameter(String name) {
            return null;
        }

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

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