Problem with REST DSL (2.14.0) and String bean

Hi everyone,

I'm currently trying the new REST DSL of the Apache Camel 2.14.0 release.
And as the title of this post state it, I got problems with a bean that
specify a file name. Let's show what's wrong.

Here come a valid XML file reduced to a test case. It only define a String
bean and a Camel context containing a rest endpoint and a single route
called by the rest endpoint.