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.ambari.server.state.fsm;
  
  public interface StateMachine
                   <STATE extends Enum<STATE>,
                    EVENTTYPE extends Enum<EVENTTYPE>, EVENT> {
    STATE getCurrentState();
    void setCurrentState(STATE state);
    STATE doTransition(EVENTTYPE eventType, EVENT event)
          throws InvalidStateTransitionException;
  }
  