public interface ExternalResourceHolder
AbstractCheck, implementor of
Filter) which uses external resources of any kind for its configuration. Such modules must declare external resource locations as a set of
Stringwhich will be returned from
getExternalResourceLocations(). This allows Checkstyle to invalidate (clear) cache when the content of at least one external configuration resource of the module is changed.
Checker. Such behaviour will signal that your module (check or filter) is designed incorrectrly. It make sence to return an empty set from 'getExternalResourceLocations()' only for composite modules like
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