long elapsed = System.currentTimeMillis() - start;
System.out.println("Reading input file completed in " + elapsed + "ms.");
System.out.println("Writing output file started.");
start = System.currentTimeMillis();
ProjectWriter writer = ProjectWriterUtility.getProjectWriter(outputFile);
writer.write(projectFile, outputFile);
elapsed = System.currentTimeMillis() - start;
System.out.println("Writing output completed in " + elapsed + "ms.");
}