private void addJarForClassToListIfExists(String cls, List<String> jarList) {
    try {
      Class.forName(cls);
      jarList.add(cls);
    } catch (Exception e) {
    }
  }
Copy auxiliary jars for the tarball.
llap-server/src/java/org/apache/hadoop/hive/llap/cli/service/AsyncTaskCopyAuxJars.java