A virtual file is not created until one of the following methods are invoked:
When a method that requires access to the file data or to know if the file exists or not, the associated data store is consulted.
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* @param directoryName the name of the parent directory * @param fileName the name of the file * @return A path handle. */ public StorageFile newStorageFile(String directoryName, String fileName) { return new VirtualFile( normalizePath(directoryName, fileName), dbData); }