final String packageName = pos == -1 ? null : className.substring(0, pos);
                final String shortClassName = pos == -1 ? className : className.substring(pos + 1);
                handler.processClass(packageName, shortClassName);
            }
        }
    }

    /**
     * Traverses classes contained in a ZIP file input stream.
     *

            ClassTraversalUtil.forEach(jarFile, (ClassHandler) (packageName, shortClassName) -> {
                if (rootPackage == null || packageName != null && packageName.startsWith(rootPackage)) {
                    handler.processClass(packageName, shortClassName);
                }
            });
        }

        @Override
        public void forEach(final ResourceHandler handler) {