code: public DescribeReservedInstancesOfferingsRequest withReservedInstancesOfferingIds(String... reservedInstancesOfferingIds) {
          if (this.reservedInstancesOfferingIds == null) {
              setReservedInstancesOfferingIds(new com.amazonaws.internal.SdkInternalList<String>(reservedInstancesOfferingIds.length));
          }
          for (String ele : reservedInstancesOfferingIds) {
              this.reservedInstancesOfferingIds.add(ele);
          }
          return this;
      }
docs: <p>
  One or more Reserved Instances offering IDs.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setReservedInstancesOfferingIds(java.util.Collection)} or
  {@link #withReservedInstancesOfferingIds(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param reservedInstancesOfferingIds
  One or more Reserved Instances offering IDs.
  @return Returns a reference to this object so that method calls can be chained together.