code: @Override
      public Appender getAppender(String name) {
          if (appenderList == null || name == null)
              return null;
          Appender appender;
          Iterator<Appender> it = appenderList.iterator();
          while (it.hasNext()) {
              appender = (Appender) it.next();
              if (name.equals(appender.getName())) {
                  return appender;
              }
          }
          return null;
      }
docs: /*
  (non-Javadoc)
  
  @see
  org.apache.log4j.helpers.AppenderAttachableImpl#getAppender(java.lang
  .String)