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