docs: public static File newBackupOf(final File file, final Charset sourceEncoding,
  		final Charset destinationEncoding) throws IOException
  	{
  		final File backup = new File(file.getAbsolutePath() + FileExtension.BACKUP.getExtension());
  		CopyFileExtensions.copyFile(file, backup, sourceEncoding, destinationEncoding, true);
  		return backup;
  	}