Purpose of max-pool-size

[wazzeps]

Please explain the purpose of the configuration property cucumber.execution.parallel.config.fixed.max-pool-size.

[mpkorstanje]

You'll want to read:

• https://github.com/cucumber/cucumber-jvm/tree/main/cucumber-junit-platform-engine#parallel-execution
• https://github.com/cucumber/cucumber-jvm/blob/07395a1e8e2ea6c4a3b8d20060694f728a9a4aa4/cucumber-junit-platform-engine/src/main/java/io/cucumber/junit/platform/engine/Constants.java#L422

Note: The property has no effect on Java 8. Pool size constraints for the ForkJoinPool didn't get implemented until Java 9.