code: public DescribeReservedInstancesModificationsResult withReservedInstancesModifications(ReservedInstancesModification... reservedInstancesModifications) {
          if (this.reservedInstancesModifications == null) {
              setReservedInstancesModifications(new com.amazonaws.internal.SdkInternalList<ReservedInstancesModification>(reservedInstancesModifications.length));
          }
          for (ReservedInstancesModification ele : reservedInstancesModifications) {
              this.reservedInstancesModifications.add(ele);
          }
          return this;
      }
docs: <p>
  The Reserved Instance modification information.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setReservedInstancesModifications(java.util.Collection)} or
  {@link #withReservedInstancesModifications(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param reservedInstancesModifications
  The Reserved Instance modification information.
  @return Returns a reference to this object so that method calls can be chained together.