Apache Camel Fremarker - apache-camel

Question

I'm assuming Camel can consume yaml or json file and apply Freemarker template. Still, I'm not able to get it up running.
Here is what I'm trying
{
"hello": "world"
}
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:camel="http://camel.apache.org/schema/spring"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd">
<camelContext xmlns="http://camel.apache.org/schema/spring" errorHandlerRef="myErrorHandler">
<globalOptions>
<globalOption key="CamelJacksonEnableTypeConverter" value="true" />
</globalOptions>
<errorHandler id="myErrorHandler" type="DeadLetterChannel"
deadLetterUri="log:dead?level=ERROR"/>
<!--
<dataFormats>
<json id="json" library="Jackson"/>
</dataFormats>
-->
<route id="freemarker">
<from uri="file://templates/?fileName=context.applications.json&noop=true&autoCreate=true&idempotentKey=${file:name}-${file:modified}"/>
<log message="Marshal ${file:absolute.path}"/>
<marshal><json/></marshal>
<log message="Freemarker ${file:absolute.path}"/>
<to uri="freemarker:file://templates/context.applications.ftl?contentCache=false" />
<log message="Update ${file:absolute.path}"/>
<to uri="file://context/?fileName=applications.txt&autoCreate=true" />
</route>
</camelContext>
</beans>
Saying ${body.hello}
I'm assuming marshal is required and this is where I get stuck.
2022-06-27 12:51:10.853 INFO 17012 --- [le://templates/] freemarker : Marshal E:\Java\camel\templates\context.applications.json
2022-06-27 12:51:10.857 ERROR 17012 --- [le://templates/] dead : Exchange[ExchangePattern: InOnly, BodyType: org.apache.camel.component.file.GenericFile, Body: [Body is file based: GenericFile[context.applications.json]]]
Any ideas? Or you have an example where jsonoch yaml file is consumed and Freemarker is applied?
Cheers
Dan