throws Throwable
throws IOException
  final public void varDump(Env env,                            WriteStream out,                            int depth,                            IdentityHashMap<Value, String> valueSet)    throws Throwable  {    if (valueSet.get(this) != null) {       out.print("#recursion#");       return;     }    valueSet.put(this, "printing");    try {      varDumpImpl(env, out, depth, valueSet);    }    finally {      valueSet.remove(this);    }  }