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.
   */
  
  'use strict';
  /**
   * Write your transction processor functions here
   */
  
  /**
   * Sample transaction
   * @param {org.example.SampleTransaction} sampleTransaction
   * @transaction
   */
  async function sampleTransaction(tx) {
      // Save the old value of the asset.
      const oldValue = tx.asset.value;
  
      // Update the asset with the new value.
      tx.asset.value = tx.newValue;
  
      // Get the asset registry for the asset.
      const assetRegistry = await getAssetRegistry('org.example.SampleAsset');
      // Update the asset in the asset registry.
      await assetRegistry.update(tx.asset);
  
      // Emit an event for the modified asset.
      let event = getFactory().newEvent('org.example', 'SampleEvent');
      event.asset = tx.asset;
      event.oldValue = oldValue;
      event.newValue = tx.newValue;
      emit(event);
  }
  