content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you 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.
   */
  package org.apache.causeway.applib.util;
  
  @SuppressWarnings("deprecation")
  class Invoice implements Comparable<Invoice>{
      private static final String KEY_PROPERTIES = "number";
  
      private String number;
      public String getNumber() {
          return number;
      }
      public void setNumber(String number) {
          this.number = number;
      }
      @Override
      public String toString() {
          return ObjectContracts.toString(this, KEY_PROPERTIES);
      }
      @Override
      public int compareTo(Invoice o) {
          return ObjectContracts.compare(this, o, KEY_PROPERTIES);
      }
  }