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1   /*
2    * Copyright 2023 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   https://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty.handler.codec.http;
17  
18  /**
19   * An interface for creating {@link HttpHeaders} instances.
20   * <p>
21   * The default implementation is {@link DefaultHttpHeadersFactory},
22   * and the default instance is {@link DefaultHttpHeadersFactory#headersFactory()}.
23   */
24  public interface HttpHeadersFactory {
25      /**
26       * Create a new {@link HttpHeaders} instance.
27       */
28      HttpHeaders newHeaders();
29  
30      /**
31       * Create a new {@link HttpHeaders} instance, but sized to be as small an object as possible.
32       */
33      HttpHeaders newEmptyHeaders();
34  }