jrapidoc-rest-plugin/src/main/java/org/jboss/resteasy/util/Encode.java
public static MultivaluedMap<String, String> decode(MultivaluedMap<String, String> map) {
        MultivaluedMapImpl<String, String> decoded = new MultivaluedMapImpl<String, String>();
        for (Map.Entry<String, List<String>> entry : map.entrySet()) {
            List<String> values = entry.getValue();
            for (String value : values) {
                try {
                    decoded.add(URLDecoder.decode(entry.getKey(), UTF_8), URLDecoder.decode(value, UTF_8));
                } catch (UnsupportedEncodingException e) {
                    throw new RuntimeException(e);
                }
            }
        }
        return decoded;
    }
public static MultivaluedMap<String, String> decode(MultivaluedMap<String, String> map) {
        MultivaluedMapImpl<String, String> decoded = new MultivaluedMapImpl<String, String>();
        for (Map.Entry<String, List<String>> entry : map.entrySet()) {
            List<String> values = entry.getValue();
            for (String value : values) {
                try {
                    decoded.add(URLDecoder.decode(entry.getKey(), UTF_8), URLDecoder.decode(value, UTF_8));
                } catch (UnsupportedEncodingException e) {
                    throw new RuntimeException(e);
                }
            }
        }
        return decoded;
    }
decode an encoded map

@param map
@return