@class NSString; @interface MFMailMessageLibraryGlobalDataUpgradeStep : NSObject <EDTableUpgradeStep> @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (id)_messagesTableDefinition; + (BOOL)_recreateMessagesIndices:(id)a0; + (id)_triggerDefinition; + (int)runWithConnection:(id)a0; @end