final File storageFile = new File(
filePersistence.getStorageFileName());
noMoreDataActionFileSize.before = storageFile.length();
session.open();
session.removeObject(KEY);
session.close(EnumFilePersistenceCloseAction.SAVE);
noMoreDataActionFileSize.after = storageFile.length();
session.open();
final Object read = session.getObject(KEY);