code: public DescribeInstanceCreditSpecificationsResult withInstanceCreditSpecifications(InstanceCreditSpecification... instanceCreditSpecifications) {
          if (this.instanceCreditSpecifications == null) {
              setInstanceCreditSpecifications(new com.amazonaws.internal.SdkInternalList<InstanceCreditSpecification>(instanceCreditSpecifications.length));
          }
          for (InstanceCreditSpecification ele : instanceCreditSpecifications) {
              this.instanceCreditSpecifications.add(ele);
          }
          return this;
      }
docs: <p>
  Information about the credit option for CPU usage of an instance.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setInstanceCreditSpecifications(java.util.Collection)} or
  {@link #withInstanceCreditSpecifications(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param instanceCreditSpecifications
  Information about the credit option for CPU usage of an instance.
  @return Returns a reference to this object so that method calls can be chained together.