[main] INFO org.opendaylight.bgpcep.config.loader.impl.AbstractWatchingConfigLoader - Config Loader service started
[main] INFO org.opendaylight.bgpcep.config.loader.impl.AbstractWatchingConfigLoader - Config Loader service stopping
Exception in thread "Config Loader Watcher Thread" org.mockito.exceptions.misusing.UnfinishedStubbingException: 
Unfinished stubbing detected here:
-> at org.opendaylight.bgpcep.config.loader.impl.OSGiConfigLoaderTest.lambda$before$0(OSGiConfigLoaderTest.java:52)

E.g. thenReturn() may be missing.
Examples of correct stubbing:
    when(mock.isOk()).thenReturn(true);
    when(mock.isOk()).thenThrow(exception);
    doThrow(exception).when(mock).someVoidMethod();
Hints:
 1. missing thenReturn()
 2. you are trying to stub a final method, which is not supported
 3. you are stubbing the behaviour of another mock inside before 'thenReturn' instruction is completed

	at org.opendaylight.bgpcep.config.loader.impl.OSGiConfigLoaderTest.lambda$before$0(OSGiConfigLoaderTest.java:52)
	at org.opendaylight.bgpcep.config.loader.impl.AbstractWatchingConfigLoader.dispatchEvents(AbstractWatchingConfigLoader.java:69)
	at java.base/java.lang.Thread.run(Thread.java:833)
[main] INFO org.opendaylight.bgpcep.config.loader.impl.AbstractWatchingConfigLoader - Config Loader service stopped