code: public void setReservedInstanceIds(java.util.Collection<String> reservedInstanceIds) {
          if (reservedInstanceIds == null) {
              this.reservedInstanceIds = null;
              return;
          }
  
          this.reservedInstanceIds = new com.amazonaws.internal.SdkInternalList<String>(reservedInstanceIds);
      }
docs: <p>
  The IDs of the Convertible Reserved Instances to exchange for another Convertible Reserved Instance of the same
  or higher value.
  </p>
  
  @param reservedInstanceIds
  The IDs of the Convertible Reserved Instances to exchange for another Convertible Reserved Instance of the
  same or higher value.