public boolean containsIgnoreCase(String name) {
        return delegate.containsKey(name) || delegate.containsKey(name.toLowerCase(Locale.ROOT));
    }
Per https://tools.ietf.org/html/rfc7230#page-19, query params are to be treated as case sensitive.
However, as a utility, this exists to allow us to do a case insensitive match on demand.
zuul-core/src/main/java/com/netflix/zuul/message/http/HttpQueryParams.java