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89
static void handleNestedFiltersFromFolderFilter(QMessageFolderFilter &filter);
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static void handleNestedFiltersFromMessageFilter(QMessageFilter &filter);
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static bool accountLessThan(const QMessageAccountId accountId1, const QMessageAccountId accountId2);
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static bool folderLessThan(const QMessageFolderId folderId1, const QMessageFolderId folderId2);