static ResponseHeaders of(HttpStatus status, CharSequence name, Object value) {
        return builder(status).addObject(name, value).build();
    }
Returns a new {@link ResponseHeaders} with the specified {@link HttpStatus} and an additional header.
The value is converted into a {@link String} as explained in
<a href="HttpHeaders.html#object-values">Specifying a non-String header value</a>.
core/src/main/java/com/linecorp/armeria/common/ResponseHeaders.java