Custom Filter

Some methods (e.g. the getSoundFiles methods in the ServerApi) can be passed a filter argument to filter the results. By default there are two predefined filters. However, if you want to add your own filter, follow these steps:

1. Create a new class that either extends from AbstractFilter or (if more controllers are needed) implements the IFilter interface.
2. Override the isValid() method and include an implementation of your filter.
3. Now register the filter once in the FilterRegistry right at the beginning when loading the mod.