Normally I'd use the provideI18nEntities::provideI18nEntities() method to offer translations to the TextCollector that cannot otherwise be picked up from a _t() function in a class. But it looks like in 3.0 the TextCollector almost never gets there:

in i18nTextCollector line 399: class_exists($class, false) seems to almost(!) always return false on my module classes. (only a SiteConfig decorator returns true). It states:

// Not all classes can be instanciated without mandatory arguments,
// so entity collection doesn't work for all SilverStripe classes currently
// Requires PHP 5.1+

But shouldn't class_exists(...) return true on existing classes anyway? Can anyone reproduce this?