Warning of illegal access suppressed

[Nielswps]

The following warnings are given due to jFoenix trying to access private methods/fields in JavaFX:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.jfoenix.adapters.ReflectionHelper ([USER]/.gradle/caches/modules-2/files-2.1/com.jfoenix/jfoenix/9.0.10/a7625792db8d15615ea6eebbc31e01504f20b2df/jfoenix-9.0.10.jar) to method java.lang.reflect.AccessibleObject.setAccessible0(boolean)
WARNING: Please consider reporting this to the maintainers of com.jfoenix.adapters.ReflectionHelper
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

The illegal access comes with performance benefits and is a technique used by many libraries. Therefore, it is unlikely to cause breaking errors in the near future. Both teams (jFoenix and JavaFX) have been notified about the issue, but currently, the only 'solution' is to suppress the warnings.