public ContentTooLargeException build() {
        if (maxContentLength < 0 && contentLength < 0 &&
            transferred < 0 && !earlyRejection && cause == null) {
            return ContentTooLargeException.get();
        }
        return new ContentTooLargeException(maxContentLength, contentLength,
                                            transferred, earlyRejection, cause);
    }
Returns a new instance of {@link ContentTooLargeException}.
core/src/main/java/com/linecorp/armeria/common/ContentTooLargeExceptionBuilder.java