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.beam.sdk.coders;
  
  import com.google.auto.service.AutoService;
  import java.util.List;
  import java.util.ServiceLoader;
  
  /**
   * {@link Coder} creators have the ability to automatically have their {@link Coder coders}
   * registered with this SDK by creating a {@link ServiceLoader} entry and a concrete implementation
   * of this interface.
   *
   * <p>It is optional but recommended to use one of the many build time tools such as {@link
   * AutoService} to generate the necessary META-INF files automatically.
   */
  public interface CoderProviderRegistrar {
    /**
     * Returns a list of {@link CoderProvider coder providers} which will be registered by default
     * within each {@link CoderRegistry coder registry} instance.
     *
     * <p>See {@link CoderProviders} for convenience methods to construct a {@link CoderProvider}.
     */
    List<CoderProvider> getCoderProviders();
  }
  