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   /*
    * Copyright 2013 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.spdy;
  
  import static io.netty.util.internal.ObjectUtil.checkPositive;
  
  /**
   * The default {@link SpdyStreamFrame} implementation.
   */
  public abstract class DefaultSpdyStreamFrame implements SpdyStreamFrame {
  
      private int streamId;
      private boolean last;
  
      /**
       * Creates a new instance.
       *
       * @param streamId the Stream-ID of this frame
       */
      protected DefaultSpdyStreamFrame(int streamId) {
          setStreamId(streamId);
      }
  
      @Override
      public int streamId() {
          return streamId;
      }
  
      @Override
      public SpdyStreamFrame setStreamId(int streamId) {
          checkPositive(streamId, "streamId");
          this.streamId = streamId;
          return this;
      }
  
      @Override
      public boolean isLast() {
          return last;
      }
  
      @Override
      public SpdyStreamFrame setLast(boolean last) {
          this.last = last;
          return this;
      }
  }