processJarFile(file, builder)
                    } else {
                        processDirectory(file, builder)
                    }
                }
            }
            return builder.build()
        }

        private
        fun processDirectory(dir: Path, builder: Trie.Builder) {
            Files.walkFileTree(dir, object : SimpleFileVisitor<Path>() {

			errs = multierror.Append(errs, err)
		}
		err = reader.Close()
		if err != nil {
			log.Infof("file: %s is not closed: %v", path, err)
		}
		warningsByFilename[path] = warning
	}
	processDirectory := func(directory string, processFile func(string)) error {
		err := filepath.Walk(directory, func(path string, info os.FileInfo, err error) error {
			if err != nil {
				return err
			}

			if info.IsDir() {