code: public ModifyInstanceCreditSpecificationResult withUnsuccessfulInstanceCreditSpecifications(
              UnsuccessfulInstanceCreditSpecificationItem... unsuccessfulInstanceCreditSpecifications) {
          if (this.unsuccessfulInstanceCreditSpecifications == null) {
              setUnsuccessfulInstanceCreditSpecifications(new com.amazonaws.internal.SdkInternalList<UnsuccessfulInstanceCreditSpecificationItem>(
                      unsuccessfulInstanceCreditSpecifications.length));
          }
          for (UnsuccessfulInstanceCreditSpecificationItem ele : unsuccessfulInstanceCreditSpecifications) {
              this.unsuccessfulInstanceCreditSpecifications.add(ele);
          }
          return this;
      }
docs: <p>
  Information about the instances whose credit option for CPU usage was not modified.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setUnsuccessfulInstanceCreditSpecifications(java.util.Collection)} or
  {@link #withUnsuccessfulInstanceCreditSpecifications(java.util.Collection)} if you want to override the existing
  values.
  </p>
  
  @param unsuccessfulInstanceCreditSpecifications
  Information about the instances whose credit option for CPU usage was not modified.
  @return Returns a reference to this object so that method calls can be chained together.