return DEFAULT_OUTPUT_FILE_SUFFIX;
}
public void convertAll() {
File[] inputFiles = inputDir.listFiles();
Arrays.sort(inputFiles, new ProblemFileComparator());
for (File inputFile : inputFiles) {
if (acceptInputFile(inputFile) && acceptInputFileDuringBulkConvert(inputFile)) {
String inputFileName = inputFile.getName();
String outputFileName = inputFileName.substring(0,
inputFileName.length() - getInputFileSuffix().length())