<configuration>

  <appender name="STR_LIST"
    class="ch.qos.logback.core.testUtil.StringListAppender">
    <!-- the fact that the layout class is not declared tests default component class
      mapping rules -->
    <layout>
      <Pattern>%requestMethod</Pattern>
    </layout>
  </appender>
  
  <appender-ref ref="STR_LIST" />
</configuration>