@Override
    public void close() throws InvalidJarPluginException {}
JarPluginLoader loads a JAR-based Embulk plugin class.

It implements {@code AutoCloseable} so that it can load the contents lazily in the future.
It is recommended to try-with-resources to use this class.
embulk-core/src/main/java/org/embulk/plugin/jar/JarPluginLoader.java