title: How to inject Grails services into src/groovy classes
body: <p>Grails 2.4.x here. If I created a Grails service using <code>grails create-service com.example.Widget</code>, then how can I inject a reference of that service (a "bean") into a class under <code>src/groovy</code>?</p>
  
  <p>This is actually not explained anywhere in the official Grails docs, and extensive searching turned back nadda.</p>