Hi, I have a small question described under https://issues.apache.org/jira/browse/LOG4J2-2674. The short summary: CompositeConfiguration uses ConfigurationSource.NULL_SOURCE. It's a bit confusing value for the source field, because it has multiple sources in fact. Do you mind to change the value of this field to newly created constant ConfigurationSource.COMPOSITE_SOURCE? If yes, I may submit PR. Thanks for your time.
With best regards, Anton Korenkov
