@Override
	public FileVisitResult visitFile(Path file, BasicFileAttributes attr) {
		if (attr.isRegularFile()) {
			String name = "" + file;
			if (name.endsWith(".txt")) {
				for (JSONArray comments : extractor.extractFromCrawler(file, related)) {
					this.docs.addJSONComments(comments);
				}
			} else if (Character.isDigit(name.charAt(name.length() - 1))) {
				this.docs.addComments(extractor.extractFromDUC(file));
			}
		}
		return CONTINUE;
	}