Regarding configuration files.

Hi I have a question regarding conf files in nextEPC. I know for example, mme.conf is generated from mme.conf.in, so I've added few of my configuration settings in mme.conf.in and same is populated in mme.conf. I use the same YAML parser to read my new configurations. It's working. I've a problem now, How is nextEPC reading these parameters? and from where? I know I've to update a structure for this. But I don't know which structure. Anybody done this before? any help is really appreciated. Thanks Murali