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   /*
    * Copyright 2016 The Netty Project
    *
    * The Netty Project 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:
    *
    *   https://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 io.netty.handler.codec.http2;
  
  import io.netty.util.internal.UnstableApi;
  
  /**
   * A visitor that allows to iterate over a collection of {@link Http2FrameStream}s.
   */
  @UnstableApi
  public interface Http2FrameStreamVisitor {
  
      /**
       * This method is called once for each stream of the collection.
       *
       * <p>If an {@link Exception} is thrown, the loop is stopped.
       *
       * @return <ul>
       *         <li>{@code true} if the visitor wants to continue the loop and handle the stream.</li>
       *         <li>{@code false} if the visitor wants to stop handling the stream and abort the loop.</li>
       *         </ul>
       */
      boolean visit(Http2FrameStream stream);
  }