code: protected void loadJars(Path pluginPath, PluginClassLoader pluginClassLoader) {
          for (String libDirectory : pluginClasspath.getLibDirectories()) {
              Path file = pluginPath.resolve(libDirectory);
              List<File> jars = FileUtils.getJars(file);
              for (File jar : jars) {
                  pluginClassLoader.addFile(jar);
              }
          }
      }
docs: Add all {@code *.jar} files from {@code lib} directories to plugin class loader.