360.4.2. usage 示例:将 map 整合到固定宽度格式中
<route>
<from uri="direct:input"/>
<marshal>
<univocity-fixed padding="_">
<univocity-header length="5"/>
<univocity-header length="5"/>
<univocity-header length="5"/>
</univocity-fixed>
</marshal>
<to uri="mock:result"/>
</route>