static AggregatedHttpResponse of(ResponseHeaders headers, HttpData content) {
        requireNonNull(headers, "headers");
        requireNonNull(content, "content");
        return of(headers, content, HttpHeaders.of());
    }
Creates a new HTTP response.

@param headers the HTTP headers
@param content the content of the HTTP response

@throws IllegalArgumentException if the status of the specified {@link ResponseHeaders} is
                                 {@linkplain HttpStatus#isInformational() informational}.
core/src/main/java/com/linecorp/armeria/common/AggregatedHttpResponse.java