*
       * (Clearing inheritableThreadLocals could still be useful independent of class unloading, but
       * that's a larger problem, which we don't attempt to solve anywhere else in Guava.)
       */
      return null;
    }
    try {
      Field inheritableThreadLocals = Thread.class.getDeclaredField("inheritableThreadLocals");
      inheritableThreadLocals.setAccessible(true);

       *
       * (Clearing inheritableThreadLocals could still be useful independent of class unloading, but
       * that's a larger problem, which we don't attempt to solve anywhere else in Guava.)
       */
      return null;
    }
    try {
      Field inheritableThreadLocals = Thread.class.getDeclaredField("inheritableThreadLocals");
      inheritableThreadLocals.setAccessible(true);