@interface BBPersistentStoreMigrator : NSObject + (id)_sectionIDsToMigrate; + (void)_migrateContentPreviewSettings:(id)a0; + (void)_migrateSectionIDs:(id)a0; + (void)_removeVestigialSections:(id)a0; + (id)_sectionIdentifiersForNonDefaultSectionCategoriesFromSectionInfos:(id)a0; + (id)_sectionIdentifiersForWeeAppsFromSectionInfos:(id)a0; + (void)migrateSectionInfoForStore:(id)a0; + (BOOL)removeSavedChronologicalSectionInfos:(id)a0; @end