static HttpResponse of(HttpStatus status, MediaType mediaType, HttpData content) {
        return of(status, mediaType, content, HttpHeaders.of());
    }
Creates a new HTTP response of the specified {@link HttpStatus}.

@param mediaType the {@link MediaType} of the response content
@param content the content of the response

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