logback-android/src/main/java/ch/qos/logback/classic/Logger.java
public synchronized void addAppender(Appender<ILoggingEvent> newAppender) {
    if (aai == null) {
      aai = new AppenderAttachableImpl<ILoggingEvent>();
    }
    aai.addAppender(newAppender);
  }
public synchronized void addAppender(Appender<ILoggingEvent> newAppender) {
    if (aai == null) {
      aai = new AppenderAttachableImpl<ILoggingEvent>();
    }
    aai.addAppender(newAppender);
  }
public synchronized void addAppender ( Appender < ILoggingEvent > newAppender ) { if ( aai == null ) { aai = new AppenderAttachableImpl < ILoggingEvent > ( ) ; } aai . addAppender ( newAppender ) ; }
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