The @dataProvider annotation should be a static function, check and make data provider in the extension, at least:
- FileProviderTest with indexFileProvider, indexFileNotFoundProvider, pageFileProvider and pageFileNotFoundProvider
- IndexTemplateStylesTest with indexStylesProvider
- QualityStatsBuilderTest with provideStatsForPaginationProviderWithOverride
- DatabasePageQualityLevelLookupTest with prefetchQualityLevelForTitlesProvider
- Pagination\FilePaginationTest with getPageNumberWithFailureProvider
- SimpleFilePaginationTest with getPageNumberWithFailureProvider
static and adjust the usages (More infos at T332865).
Initial work was done in 9ab19a133572cf4bb35d81dea0498649b93bb430