Leo

An option to set the fetch size makes sense to me. Need to take a look what changes would be needed to support it.

> leonate is a new contributor to [projects/jxls](https://github.com//google/oss-fuzz/tree/master/projects/jxls). The PR must be approved by known contributors before it can be merged. The past contributors are: onionpsy @onionpsy could you approve...

> @leonate could you take a look at the failed CI, it looks like there are some build issues for the project. Thanks, @DavidKorczynski, I see it runs Gradle build...

I made changes to the Dockerfile to install JDK 17 as it is a requirement for Jxls project. Waiting for the checks result..

> Solution: extend `Utl.regexCellRef` with `+ "|[a-zA-Z_]+[a-zA-Z0-9_]*\\[.+\\]"`. However, many testcases will fail. I added `|[a-zA-Z_]+[a-zA-Z0-9_]*\[.+\]` to the `Util.regexCellRef` pattern as you suggested and `mvn verify` still works fine for me....