Steps to reproduce:

• create an abstract Arquillian JUnit test with a deployment method
• create an Arquillian JUnit test extending the previous created abstract class
• add a type not included in the deployment method to the test created in the step 2
  The "Type is not included in any deployment" marker will be created properly
• call the "Add type to deployment" quickfix

You will get the "Cannot find a deployment method" dialog.