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.transforms.windowing;
  
  import java.util.List;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.Lists;
  import org.joda.time.Instant;
  
  /** No-op {@link OnceTrigger} implementation for testing. */
  abstract class StubTrigger extends Trigger.OnceTrigger {
    /**
     * Create a stub {@link Trigger} instance which returns the specified name on {@link #toString()}.
     */
    static StubTrigger named(final String name) {
      return new StubTrigger() {
        @Override
        public String toString() {
          return name;
        }
      };
    }
  
    protected StubTrigger() {
      super(Lists.newArrayList());
    }
  
    @Override
    protected Trigger getContinuationTrigger(List<Trigger> continuationTriggers) {
      return null;
    }
  
    @Override
    public Instant getWatermarkThatGuaranteesFiring(BoundedWindow window) {
      return null;
    }
  }
  