An illegal reflective access operation has occurred -> openjdk 12.0.2-BellSoft 2019-07-16

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- [ ] Bug exists Release Version 1.2.0 ( Master Branch)
- [x] Bug exists in MQTTv3 Client on Snapshot Version 1.2.1-SNAPSHOT (Develop Branch)
- [ ] Bug exists in MQTTv5 Client on Snapshot Version 1.2.1-SNAPSHOT (Develop Branch)

If this is a bug regarding the Android Service, please raise the bug here instead: https://github.com/eclipse/paho.mqtt.android/issues/new

at:
openjdk 12.0.2-BellSoft 2019-07-16
OpenJDK Runtime Environment (build 12.0.2-BellSoft+10)
OpenJDK Server VM (build 12.0.2-BellSoft+10, mixed mode)

following error:
Aug 29 19:38:54 alamosaux selcall.sh[16064]: WARNING: An illegal reflective access operation has occurred
Aug 29 19:38:54 alamosaux selcall.sh[16064]: WARNING: Illegal reflective access by org.eclipse.paho.client.mqttv3.internal.FileLock (file:/home/selcall/selcall/JSelcall.jar) to method sun.nio.ch.FileLockImpl.release()
Aug 29 19:38:54 alamosaux selcall.sh[16064]: WARNING: Please consider reporting this to the maintainers of org.eclipse.paho.client.mqttv3.internal.FileLock
Aug 29 19:38:54 alamosaux selcall.sh[16064]: WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
Aug 29 19:38:54 alamosaux selcall.sh[16064]: WARNING: All illegal access operations will be denied in a future release

What can be done?

Greets Thorsten