title: apply JAXB annotation to an existing data model
body: <p>I have the following problem. For webservices I am using an existing data model. So I need to apply JAXB annotations on the existing source classes. This requires a lot of effort to do manually.</p>
  
  <p>Does anyone know a tool that can help automate this process? For clarity, generating java source code through an <code>xsd</code> is not the goal.</p>