docs: private static File getToolsJar() {
          String javaHome = System.getProperty("java.home");
          File file = new File(javaHome, "../lib/tools.jar");
          if (!file.exists()) {
              file = new File(javaHome, "lib/tools.jar");
              if (!file.exists()) {
                  return null;
              }
          }
  
          return file;
      }