Custom Processing of Container Config Files?

[Jamey Wood]

Is there some easy way to add one's own processing logic for container 
config files?  Until recently, ContainerConfig.loadFromString(String 
json) was a public method.  So we subclassed ContainerConfig and 
overrode this method to tie-in our own pre-processing logic (basically 
expanding ${xyz}-style references to properties that are defined in our 
env) before passing the resulting string on via 
super.loadFromString(myProcessedJson).  But that no longer works, since 
this method is now private in Shindig.  I don't see any obvious way to 
do something similar now (without duplicating a lot of ContainerConfig's 
logic ourselves).

Thanks,
Jamey