IDBMutableFile.open() is deprecated. If this API gets standardized, it will likely do so under the Origin Private File System effort at https://bugzil.la/1748667.
IDBMutableFile.open() d aqbur. Ma yella API-a tettwaslugan, ad tili ddaw leɛnaya n Origin Private File System ɣef https://bugzil.la/1748667.