Sometimes we are using CompositeConfiguration in our code. During last investigation we've found out that configuration source passed during constructor call is 'NULL_SOURCE'. It's a bit confusing because it conflicts with NULL_SOURCE definition
because actually we have a 'composite' or 'multiple' configuration sources which will be used later to produce real configuration.
The question is: do you mind to create 'COMPOSITE_SOURCE' constant and use it in CompositeConfiguration?