title: Mapstruct - How can I inject a spring dependency in the Generated Mapper class
body: <p>I need to inject a spring service class in the generated mapper implementation, so that I can use it via </p>
  
  <pre><code>   @Mapping(target="x", expression="java(myservice.findById(id))")"
  </code></pre>
  
  <p>Is this applicable in Mapstruct-1.0?</p>