How do you add custom cargo bay doors to a modded part?

[Oliverandom]

I've had an idea of a fuel tank, which simultaneously has extra service bays for fuel, craft etc. The question is, how do I do it?  The model is done, just the programming is what I'm missing.

Edited August 16, 2020 by Oliverandom

[Gargamel]

Welcome to the forums @Oliverandom, your question has been moved to the Add-on discussion subforum. 

[HansAcker]

If your cargo bay doesn' do anything special and has the animation defined within the model, no programming is required.  For stock cargo bay behaviour, you'd need to add  "ModuleAnimateGeneric" and "ModuleCargoBay" to the part config.

I'd look at the config for the stock cargo bays or examples in other mods. Apparently, multiple cargo bay modules can reference the same animation and the Mk2 lander can doesn't even use the cargo bay module for its storage space. The module options are listed in the API (ModuleAnimateGeneric and ModuleCargoBay) but there's little documentation in it.