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.spec;
  
  import org.apache.causeway.applib.annotation.Programmatic;
  import org.apache.causeway.applib.services.i18n.TranslatableString;
  
  /**
   * Optional extension to the base {@link Specification}, to allow for i18n.
   *
   * <p>
   *     If implemented, then the {@link #satisfies(Object)} inherited from {@link Specification} can just return <tt>null</tt>;
   *     it will never be called by the framework.
   * </p>
   *
   * @since 1.x {@index}
   */
  public interface Specification2 extends Specification {
  
      /**
       * If <tt>null</tt> then satisfied, otherwise is the reason (as a {@link TranslatableString} translatable string) as to why the specification is not satisfied.
       */
      @Programmatic
      TranslatableString satisfiesTranslatable(Object obj);
  
  }
  