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   /*
    * Copyright 2019 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;
  
  /**
   * An ack for a previously received {@link Http2SettingsFrame}.
   * <p>
   * The <a href="https://tools.ietf.org/html/rfc7540#section-6.5">HTTP/2 protocol</a> enforces that ACKs are applied in
   * order, so this ACK will apply to the earliest received and not yet ACKed {@link Http2SettingsFrame} frame.
   */
  public interface Http2SettingsAckFrame extends Http2Frame {
      Http2SettingsAckFrame INSTANCE = new DefaultHttp2SettingsAckFrame();
  
      @Override
      String name();
  }