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.runners.core;
  
  import org.apache.beam.sdk.transforms.DoFn.BundleFinalizer;
  
  /**
   * The context in which a specific step is executing, including access to state and timers.
   *
   * <p>This interface exists as the API between a runner and the support code, but is not user
   * facing.
   *
   * <p>These will often be scoped to a particular step and key, though it is not required.
   */
  public interface StepContext {
  
    StateInternals stateInternals();
  
    TimerInternals timerInternals();
  
    default BundleFinalizer bundleFinalizer() {
      throw new UnsupportedOperationException("BundleFinalizer is unsupported.");
    }
  }
  