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 com.alibaba.compileflow.engine.core.definition;
  
  /**
   * Represents a fundamental building block of a process graph, such as a task,
   * a gateway, or an event.
   * <p>
   * This is the base interface for all elements that can be connected by transitions.
   *
   * @author yusu
   */
  public interface Node extends Element {
  
      /**
       * Gets the human-readable name of the node.
       *
       * @return The node name.
       */
      String getName();
  
      /**
       * Gets an optional tag associated with the node.
       * <p>
       * For stateful processes, this tag is used to uniquely identify a waiting
       * node so that it can be triggered externally.
       *
       * @return The node tag, or {id} if not specified.
       */
      String getTag();
  
  }
  