try {
XMLInstance2Schema schemaGenerator = new XMLInstance2Schema();
if (_defaultGroupingAsAll) {
schemaGenerator.setDefaultGroupingAsAll();
}
Schema schema = schemaGenerator.createSchema(filePath);
String outputFileName = outputFilePath;
if (outputFileName == null) {
outputFileName = deriveOutputFilePath(filePath);
}
FileWriter dstWriter = new FileWriter(outputFileName);