The module is inherited from ItemModuleBase. So base parameters can be found there.
This modules let's you add mask patterns.
The name of the module you use as the meta of the module definition is 'MaskPattern' or 'MaskPatternModule' if _force_search is set to true in the module definition.
The ID of the pattern
Optional path of the pattern's texture. If you're loading a custom one you'll need to load it through AddFiles first. Defaults to units/mods/masks/shared_textures/pattern_id
For packs of mods, a global id assigned to all. A nice way to label your mods. You'll still have to create the global value through GlobalValueModule
A localization ID for the pattern (Defaults to pattern_ + id + _title)
And any other tweakdata value. There are more that are not listed here yet.
This example is what you would put inside your main node within your mod config
This will add the mask pattern spade. You will still need to localize the name of the pattern. In this case pattern_spade_title will need to be localized using LocalizationModule. And add the texture which in this is in "units/mods/masks/shared_textures/pattern_spade" through AddFiles