code: public ReservedElasticsearchInstanceOffering withRecurringCharges(RecurringCharge... recurringCharges) {
          if (this.recurringCharges == null) {
              setRecurringCharges(new java.util.ArrayList<RecurringCharge>(recurringCharges.length));
          }
          for (RecurringCharge ele : recurringCharges) {
              this.recurringCharges.add(ele);
          }
          return this;
      }
docs: <p>
  The charge to your account regardless of whether you are creating any domains using the instance offering.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setRecurringCharges(java.util.Collection)} or {@link #withRecurringCharges(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param recurringCharges
  The charge to your account regardless of whether you are creating any domains using the instance offering.
  @return Returns a reference to this object so that method calls can be chained together.