code: public java.util.List<String> getRuleNames() {
          if (ruleNames == null) {
              ruleNames = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return ruleNames;
      }
docs: <p>
  A list of the specified receipt rule set's receipt rules in the order that you want to put them.
  </p>
  
  @return A list of the specified receipt rule set's receipt rules in the order that you want to put them.