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.services.ascii;
  
  /**
   * Optional SPI to provide an equivalent identifier using only ASCII character set, for the specified feature
   * (a property, collection, action or action parameter).
   *
   * <p>
   *     The GraphQL API (viewer) may require this SPI to be implemented if any of the features use non-ASCII characters,
   *     because feature Ids are used as GraphQL (field) names.
   * </p>
   *
   * @see <a href="https://spec.graphql.org/October2021/#sec-Names">GraphQL specification</a>
   *
   * @since 2.x {@index}
   */
  public interface AsciiIdentifierService {
  
      String asciiIdFor(String featureId);
  
  }
  