exchange.getIn().setBody() does not work for OnException block

[Wang Yan]

According to document (
https://camel.apache.org/using-getin-or-getout-methods-on-exchange.html),
when we modify body of exchange, we should use exchange.getIn().setBody()
instead of exchange.getOut().setBody()

It ususally works. but for OnException block, it does not work , I have to
use exchange.getOut().setBody
Any hints are more than suggest or hints are more than welcome!





onException(Exception.class).convertBodyTo(String.class).log(LoggingLevel.INFO,
.process(exchange -> {
exchange.getIn().setHeader("Content-Type", "text/xml; charset=UTF-8");
exchange.getOut().setBody(" Error happend , please contact Admin ");
//exchange.getIn().setBody(" Error happend , please contact Admin ");  ->
exchange.getIn().setBody does not work here!!!
}).handled(true).end();