ConfiguratoinBiulder will create a full configuration. If you want to merge it
with a configuration generated from a file you could use a
CompositeConfiguration. In that case you would do something like:
List list = new ArrayList<>();
list.add(ctx.getConfiguration()); // Get existing file-base
ref:
https://logging.apache.org/log4j/2.x/manual/customconfig.html#ConfigurationBuilder
The ConfigurationBuilder is demonstrated in [
* https://logging.apache.org/log4j/2.x/manual/customconfig.html#Example
* https://logging.apache.org/log4j/2.x/manual/customconfig.html#Configurator
] but not in [
