[Freeswitch-users] any tips for adding a new ASR module?

I’m thinking of adding a new module in mod/asr_tts to implement support for ASR using Nuance’s HTTP-based cloud interface. Beyond the standard module author documentation (which seems to pertain more specifically to things added under mod/applications) I was wondering if there are any specific docs that describe how to add asr or tts modules, which seem to implement a specific interface? If not, I’ll just review the existing modules and follow along, but I thought it would be worth asking…. Dave