code: public ReservedInstancesModification withModificationResults(ReservedInstancesModificationResult... modificationResults) {
          if (this.modificationResults == null) {
              setModificationResults(new com.amazonaws.internal.SdkInternalList<ReservedInstancesModificationResult>(modificationResults.length));
          }
          for (ReservedInstancesModificationResult ele : modificationResults) {
              this.modificationResults.add(ele);
          }
          return this;
      }
docs: <p>
  Contains target configurations along with their corresponding new Reserved Instance IDs.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setModificationResults(java.util.Collection)} or {@link #withModificationResults(java.util.Collection)}
  if you want to override the existing values.
  </p>
  
  @param modificationResults
  Contains target configurations along with their corresponding new Reserved Instance IDs.
  @return Returns a reference to this object so that method calls can be chained together.