static <T> ResponseEntity<T> of(HttpStatus status, T content, HttpHeaders trailers) {
        return of(ResponseHeaders.of(status), content, trailers);
    }
Returns a newly created {@link ResponseEntity} with the specified {@link HttpStatus},
{@code content} and {@linkplain HttpHeaders trailers}.
core/src/main/java/com/linecorp/armeria/common/ResponseEntity.java