converting bean to xml with camel

I'm trying to convert a bean to an XML file using Jaxb and Camel. All of the examples I see in books and online follow a similar format but it just doesnt work for me. It could be my bean, but I'm not sure.

I get the following error:

[ERROR] Failed to execute goal org.apache.camel:camel-maven-plugin:2.12.0.redhat-610379:run (default-cli) on project simple-route: null: MojoExecutionException: InvocationTargetException: org.apache.camel.util.ObjectHelper.notNull(Ljava/lang/Object;Ljava/lang/String;)V -> [Help 1] [ERROR]

I have a hashmap but I'm also populating fields. The reason for that is that I was just trying to see what worked. I'm not really attached to either, though I think Jaxb uses the fields.

heres my route, then my bean

 <bean id="mockSql" class="tutorial.simple.route.MockSql"/>
 <camelContext id="camel" xmlns="http://ift.tt/TZ5qsO">
     <route>
         <from uri="bean:mockSql?method=populate"/>
         <marshal ref="mockSql" id="jb1" customId="true">
             <jaxb contextPath="tutorial.simple.route"/>
         </marshal>
         <to uri="file:target/messages/other"/>
     </route>
 </camelContext>

 </beans>

now my bean

package tutorial.simple.route;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import org.apache.camel.CamelContext;
import org.apache.camel.Handler;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;


public class MockSql {

    private String name="name";
    private String job="job";

private static final Logger log = Logger.getLogger("mockSql");
ArrayList <HashMap> ary = new ArrayList<HashMap>();
    public MockSql() throws Exception{
    // CamelContext context = new DefaultCamelContext();


        log.setLevel(Level.DEBUG);
        log.debug("constructed mock sql \n \n");
    }
    @Handler
    public ArrayList<HashMap> populate(){

        HashMap<String, String> hm = new HashMap();
        HashMap<String, String> hm2 = new HashMap();
        hm.put("n1", "j1");
        hm2.put("n2", "j2");

        ary.add(hm);
        ary.add(hm2);

        log.debug("populated mock sql");
        return ary;
    }


}