public void setValues(List<String> values) {
      if (this.values == null) {
        this.values = new ArrayList<>();
      }
      if (this.values == values) {
        return;
      }
      this.values.clear();
      if (values != null) {
        this.values.addAll(values);
      }
    }
@param values the values to set
ql/src/java/org/apache/hadoop/hive/ql/exec/repl/ranger/RangerPolicy.java