text: /*
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /**
  * Sample transaction
  * @param {api.OrganTransfer} organTransfer
  * @transaction
  */
  function organTransfer(organTransfer) {
      if (organTransfer.from.bloodGroup != organTransfer.to.bloodGroup) {
      throw new Error ("Invalid Transfer: The blood group of receiver and donor is not matching.");
      }
      if (organTransfer.from.organToDonate != organTransfer.to.requiredOrgan) {
          throw new Error ("Invalid Transfer: The donated and required organs should be the same.")
      }
      organTransfer.from.donated = true;
      organTransfer.to.received = true;
      organTransfer.from.priorityPoints += organTransfer.rewardPonits;
      return getParticipantRegistry('api.Donor')
      .then (function (participantRegistry) {
      return participantRegistry.update(organTransfer.from);
      })
      .then (function () {
      return getParticipantRegistry('api.Receiver');
      })
      .then(function (participantRegistry) {
      return participantRegistry.update(organTransfer.to);
      });
      }
  