Hi Kyle!
The moduleId is a combination of the extension's feature name and module name.
FeatureName.ModuleName
It is only an optional parameter for the getTectonCacheObject capability. setTectonCacheObject will set the cache under the FeatureName and ModuleName it is called from and by default getTectonCacheObject will retrive cache for the module in use. Passing a moduleId in will allow you to grab the cache from a sibling extension.
