text: //
  //  COActorChan.h
  //  coobjc
  //
  //  Copyright © 2018 Alibaba Group Holding Limited All rights reserved.
  //
  //   Licensed 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.
  
  
  #import <Foundation/Foundation.h>
  #import <coobjc/COActorMessage.h>
  #import <coobjc/COChan.h>
  
  NS_ASSUME_NONNULL_BEGIN
  
  /**
   This is a subclass of COChan. comform to protocol NSFastEnumeration
   
   @discussion can use for...in.. statement get message from the channel.
   */
  @interface COActorChan : COChan<NSFastEnumeration>
  
  /**
   Blocking read a message from the Channel.
  
   @return The actor message object.
   */
  - (COActorMessage *)next;
  
  @end
  
  NS_ASSUME_NONNULL_END
  