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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements. See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache license, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License. You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the license for the specific language governing permissions and
15   * limitations under the license.
16   */
17  package org.apache.log4j;
18  
19  import org.apache.log4j.spi.LoggingEvent;
20  import org.apache.logging.log4j.util.Strings;
21  
22  /**
23   *
24   */
25  public class PatternLayout extends Layout {
26  
27      public PatternLayout(final String pattern) {
28  
29      }
30  
31      @Override
32      public String format(final LoggingEvent event) {
33          return Strings.EMPTY;
34      }
35  
36      @Override
37      public boolean ignoresThrowable() {
38          return true;
39      }
40  }